HSST PHYSICS – SR FOR SC/ST – KHSE

FINAL ANSWER KEY
Question Paper Code: 73/2016/OL
Category Code: 033/2016
Exam: HSST Physics SR for SC/ST
Medium of Question: English
Date of Test 03-10-2016
Alphacode A
Question1:-Who was the founder editor of the Magazine “Yukthivadi’?
A:-Sahodaran Ayyappan
B:-Ayyankali
C:-Dr.Palpu
D:-Pandit K P Karuppan
Correct Answer:- Option-A
Question2:-The slogan for the Asian Games held at Incheon in 2014
A:-Green,Clean and Friendship
B:-We clear, We share, We win
C:-Diversity shines here
D:-None of these
Correct Answer:- Option-C
Question3:-“Visakhavijayam” is the work of ….?
A:-Kodungallur Kunhikkuttan Thampuran
B:-Kerala Varma Valiyakoyi Thampuran
C:-Kumaran Assan
D:-Ulloor S Parameswara Iyer
Correct Answer:- Option-B
Question4:-The 25th anniversary of the Fall of Berlin Wall was celebrated in ..?
A:-1989 November 9
B:-1961 November 9
C:-2013 November 9
D:-2014 November 9
Correct Answer:- Option-D
Question5:-Who was the Maharaja of Travancore during the Abstention Movement?
A:-Sri Chithira Thirunal
B:-Visakham Thirunal
C:-Sri Moolam Thirunal
D:-Swathi Thirunal
Correct Answer:- Option-A
Question6:-The first European Union country which recognized the state of Palestine?
A:-Germany
B:-Italy
C:-Sweden
D:-England
Correct Answer:- Option-C
Question7:-Duleep Trophy is associated with?
A:-Football
B:-Volleyball
C:-Basketball
D:-Cricket
Correct Answer:- Option-D
Question8:-‘Jeevitha Samaram’ is the autobiography of….?
A:-TK Madhavan
B:-C Kesavan
C:-K P Kesavamenon
D:-K Kelappan
Correct Answer:- Option-B
Question9:-The first woman High Court Judge in India?
A:-Anna Chandy
B:-Akkamma Cheriyan
C:-Arya Pallam
D:-AV Kuttimalu Amma
Correct Answer:- Option-A
Question10:-‘Rashtriya Ekta Diwas’ was observed on 31st October 2014 to commemorate the birth anniversary of …?
A:-Dadabhai Naoroji
B:-Gopalakrishna Gokhale
C:-Sardar Vallabhbhai Patel
D:-Mahatma Gandhi
Correct Answer:- Option-C
Question11:-The eigen value of the matrix A= `[[costheta,-sintheta],[sintheta,costheta]]` is
A:-exp ±iθ/2
B:-exp±2iθ
C:-exp ±3iθ
D:-exp±iθ
Correct Answer:- Option-D
Question12:- The necessary condition for the function f (Z) to be analytic at the point Z is
A:-∂U/ ∂y= ∂V/ ∂x and ∂U/ ∂x= ∂V/∂ y
B:-∂U/∂ x= ∂V/ ∂y and ∂V/∂ x= – ∂U/ ∂y
C:-∂U/ ∂x= ∂ U / ∂y and ∂V/∂ x= – ∂V/ ∂y
D:-∂U/ ∂x= ∂U/ ∂y and ∂V/ ∂x= – ∂V/ ∂y
Correct Answer:- Option-B
Question13:-The residue of `z/((z-a)(z-b))` at infinity is
A:-a/b
B:–b/a
C:-1
D:–1
Correct Answer:- Option-D
Question14:- Which one of the following is a tensor of order zero, if A and B are vectors?
A:-A + B
B:-A – B
C:-A . B
D:-A x B
Correct Answer:- Option-C
Question15:- Aij and Bij represent symmetric and anti symmetric real valued tensor respectively in three dimension. The
number of independent components of Aij and Bij are
A:-3 and 6
B:-6 and 3
C:-6 and6
D:-9 and 6
Correct Answer:- Option-B
Question16:-If F(s) is the Laplace transform of F (t) the Laplace transform of F (at) is
A:-`1/a` F(s)
B:-`1/a`F(s/a)
C:-F(s)
D:-F(s/a)
Correct Answer:- Option-B
Question17:-The matrix `[[0,-1,0],[1,0,0],[0,0,1]]` is
A:-orthogonal
B:-hermitian
C:-anti symmetric
D:-None of the above
Correct Answer:- Option-A
Question18:-If H is Hermitian matrix then exp(iH) will be
A:-hermitian
B:-anti hermitian
C:-unitary
D:-orthogonal
Correct Answer:- Option-C
Question19:-Orthogonal property of Legender’s polynomial is given by
A:-`int_-1^1“Pm(x)Pn(x)=0` m≠n
B:-`int_-1^1“Pm(x)Pn(x)=1` m≠n
C:-`int_0^1“Pm(x)Pn(x)=0`m≠n
D:-`int_0^1“Pm(x)Pn(x)=0`m≠n
Correct Answer:- Option-A
Question20:-Find the value of “ `|~(5/2)` i.e gamma (5/2)
A:-`(3sqrt(pi))/(4)`
B:-`(sqrt(pi))/(2)`
C:-`(15sqrt(pi))/(8)`
D:-`(sqrt(pi))/(3)`
Correct Answer:- Option-A
Question21:-A particle of mass m is bound by a linear potential U=kr. For what energy will the orbit be a circle of radius r
about the origin
A:-`(3kr)/(2)`
B:-3kr
C:-kr
D:-`(kr)/(2)`
Correct Answer:- Option-A
Question22:-Two circular discs have the same mass m and same thickness t. Disc one has uniform density less than that of
disc two. Which of the following is correct.
A:-Disc two has larger moment of inertia
B:-Disc one has larger moment of inertia
C:-Both have same moment of inertia
D:-Can not be predicted from given data.
Correct Answer:- Option-B
Question23:-Consider motion of a particle of mass m under the influence of a force F=-kr, where k is a positive constant and
r is the position vector of the particle. Now the orbit will be
A:-Ellipse
B:-Along a line
C:-Circle
D:-Parabola
Correct Answer:- Option-A
Question24:-A violin string 0.5m long has a fundamental frequency 200Hz. At what speed does a transverse pulse travel on
this string?
A:-100m/s
B:-400m/s
C:-200m/s
D:-300m/s
Correct Answer:- Option-C
Question25:-Consider the longitudinal vibration of a linear triatomic molecule with two atoms of mass m each symmetrically
situated on either sides of an atom of mass M. Now which of the following is a normal mode frequency of the system,if we
use a spring model
A:-`sqrt(kM)`
B:-`sqrt(km)`
C:-0
D:-`sqrt(kMm)`
Correct Answer:- Option-C
Question26:-Number of generalized coordinates required to describe the motion of a particle of mass m constrained to
move on the surface of a sphere of radius R are
A:-3
B:-1
C:-0
D:-2
Correct Answer:- Option-D
Question27:-The Hamiltonian of a particle in a central potential V(r) is
A:-`(p^(2))/(2m)`
B:-`(p^(2))/(2m)` +V(r)
C:-`(p^(2))/(2m)` -V(r)
D:-`(p^(2))/(2m)` +`gradV(r)`
Correct Answer:- Option-B
Question28:-Two particles of same mass m are emitted in the same direction with momenta 5mc and 10mc respectively(c is
the speed of light). As seen from the slower one, what is the speed of the faster particle?
A:-0.595c
B:-0.425c
C:-0.795c
D:-0.85c
Correct Answer:- Option-A
Question29:-Which of the following has positive intrinsic curvature?
A:-Saddle
B:-Plane
C:-Sphere
D:-Cylinder
Correct Answer:- Option-C
Question30:-A particle is constrained to move on a plane, where it is attracted towards a fixed point with force is inversely
proportional to square of the distance from the point. What is the Lagrangian of the particle in polar coordinates?
A:-`(mdotr^(2)+mr^(2)dottheta^(2))/(2)` +`(k)/(r)`
B:-`(mdotr^(2))/(2)` +`(k)/(r)`
C:-`(mdotr^(2))/(2)` -`(k)/(r)`
D:-`(mdotr^(2))/(2)` +`(mr^(2)dottheta^(2))/(2)`
Correct Answer:- Option-A
Question31:-The de-Broglie wavelength of an electron accelerated to a potential difference of V volts is
A:-`sqrt((150)/(V))` `dotA““`
B:-`(h)/(sqrt(2mE)` `dotA`
C:-`(h)/(sqrt(2mkT)` `dotA`
D:-`hsqrt((150)/(meV))“` `dotA`
Correct Answer:- Option-A
Question32:-The electron orbit in a ground state hydrogen atom is in circumference equals to
A:-one de-Broglie wave length
B:-Two de-Broglie wave length
C:-Ten de-Broglie wave length
D:-Twelve and half de-Broglie wave length
Correct Answer:- Option-A
Question33:-In case more than one linearly independent wave functions belong to the same energy E, the level is said to be
A:-orthogonal
B:-orthonormal
C:-degenerate
D:-non-degenerate
Correct Answer:- Option-C
Question34:-The particle confined within the potential well displays
A:-discrete series of energy
B:-continuous series of energy
C:-both continuous and discrete series at time
D:-none of the above
Correct Answer:- Option-A
Question35:-If the uncertainty in momentum Δ`p_(x)` is known, then Δ`p_(y)` will be
A:-equal to Δ`p_(x)`
B:-3.33x`10^(-10)` Δ`p_(x)`
C:-0.5x`10^(-10)` Δ`p_(x)`
D:-impossible to say
Correct Answer:- Option-D
Question36:-A golf ball of 46 gm travels at 30 m/s. The wave length associated with it is
A:-4.8x`10^(-34)` m
B:-0.48x`10^(-34)` m
C:-4.8x`10^(-36)` m
D:-0.048x`10^(-34)` m
Correct Answer:- Option-A
Question37:-Since electrons has an intrinsic magnetic dipole moment due to its spin, the electron interacts with the external
magnetic field and the operator for this moment is `hatmu` is
A:-`(eh)/(4Pi m)` `hatsigma`
B:-`(eh)/(8Pi m)` `hatSigma“ `
C:-`(em)/(4(h/(2Pi))` `hatsigma`
D:-`(em)/(2(h/(2Pi))` `hatsigma`
Correct Answer:- Option-A
Question38:-A wave function is said to be symmetric if the interchange of any pair of particles
A:-changes the sign of ψ
B:-does not change the sign of ψ
C:-change or does not change ψ
D:-none of the above is true
Correct Answer:- Option-B
Question39:-The value of [`L_(x)` , `L_(y)` ] is
A:-i(h/2π) L
B:-i(h/2π)`L_(z)`
C:-zero
D:-i`L_(z)`
Correct Answer:- Option-B
Question40:-Find the correct relation
A:-Hψ = i(h/2π) `(dPsi)/dx`
B:-HΨ = i(h/2π) `(dPsi)/dt`
C:-Hψ =(` “ ` `(h^2)/(8m)` `d^2/dx^2` +V )ψ
D:-Hψ =( `p^(2)` + `V^(2)` )ψ
Correct Answer:- Option-B
Question41:-If a material has a conductivity of 25 S/m and relative permittivity of 80, then at a frequency of 3 GHz the
material will acts as
A:-insulator
B:-conductor
C:-perfect dielectric
D:-none of the above
Correct Answer:- Option-B
Question42:-For normal incidence at an air glass interface with refractive index of 1.5 the fraction of energy reflected is
given by
A:-0.40
B:-0.2
C:-0.16
D:-0.04
Correct Answer:- Option-D
Question43:-Which of the following current densities J can generate the magnetic vector potential A=y²i+x²j
A:-2(xi+ yj)/μ0
B:–2(i+ j)/μ0
C:–2(i-j)/μ0
D:-2(xi-yj)/μ0
Correct Answer:- Option-B
Question44:- Find out the correct relation between magnetic field B and electric field E, if n is the unit vector along the
direction of propagation
A:-B = (n×E)/c
B:-B = c(n×E)
C:-B = c/(n×E)
D:-B = (E×n)/c
Correct Answer:- Option-A
Question45:-Neper/meter is the SI unit of
A:-phase constant
B:-attenuation constant
C:-planck’s constant
D:-skin depth
Correct Answer:- Option-B
Question46:-A system of N non-interacting classical point particles are constrained to move on the two-dimensional surface
of a sphere. The internal energy of the system is
A:-`(3)/(2)`N`k_(B)`T
B:-`(1)/(2)`N`k_(B)`T
C:-`(5)/(2)`N`k_(B)`T
D:-N`k_(B)`T
Correct Answer:- Option-D
Question47:-The isothermal compressibility of an ideal gas at temperature T and volume V is given by
A:-K=-V`((delP)/(delV))_(T)`
B:-K=V`((delP)/(delV))_(T)`
C:-K=`(1)/(V)“((delV)/(delP))_(T)`
D:-K=-`(1)/(V)` `((delV)/(delP))_(T)`
Correct Answer:- Option-D
Question48:-What is the temperature of an ideal gas of He atoms, if there are 6`xx` `10^(22)` atoms occupying 2 litres at
atmospheric pressure?
A:-341K
B:-241K
C:-300K
D:-273K
Correct Answer:- Option-B
Question49:-Consider a photon gas enclosed in a volume V and in equilibrium at temperature T. What is the chemical
potential of this gas?
A:-`(3)/(2)` kT
B:-`(3)/(2)` `(kT)/(V)`
C:-0
D:-`(1)/(2)` kT
Correct Answer:- Option-C
Question50:-A white dwarf star is supported against gravity by
A:-Electron degeneracy pressure
B:-Radiation pressure
C:-Thermal pressure
D:-Neutron degeneracy pressure
Correct Answer:- Option-A
Question51:-Anomalous Zeeman effect is exhibited by atoms having
A:-zero spin angular momentum
B:-non-zero spin angular momentum
C:-non -zero orbital angular momentum
D:-none of these
Correct Answer:- Option-B
Question52:-The lande g factor for the 3D1 level of an atom is
A:-1/2
B:-3/2
C:-5/2
D:-7/2
Correct Answer:- Option-A
Question53:-The ratio of intensity of D1 and D2 line of sodium atom is
A:-1:2
B:-2:1
C:-3:2
D:-2:3
Correct Answer:- Option-B
Question54:-Identify the molecule whose vibrations are both Raman and IR active
A:-`CO_(2)`
B:-`CS_(2)`
C:-`H_(2)O`
D:-`O_(2)`
Correct Answer:- Option-C
Question55:-The term `(j_(1),j_(2))` arising from 2s1,2p1 electronic configuration in jj coupling scheme is
A:-“`(1/2,3/2)_(2,1)` “`(1/2,1/2)_(1,2)`
B:-“`(1/2,3/2)_(2,1)` “`(1/2,1/2)_(1,0)`
C:-“`(3/2,5/2)_(4,3)` “`(1/2,3/2)_(2,1)`
D:-“`(1/2,1/2)_(2,1)` “`(3/2,1/2)_(1,0)`
Correct Answer:- Option-B
Question56:-Metallic sodium has a BCC structure. Which of the following lines will be absent in the diffraction pattern
A:-(100)
B:-(200)
C:-(110)
D:-(222)
Correct Answer:- Option-A
Question57:-The reciprocal lattice to a BCC lattice is a lattice of type
A:-Simple cubic
B:-BCC
C:-FCC
D:-none of the above
Correct Answer:- Option-C
Question58:-Hall co-efficient gives an indication of
A:-thermal conductivity
B:-specific heat capacity
C:-carrier concentration
D:-None of the above
Correct Answer:- Option-C
Question59:-If the fermi energy of copper is 7.0 eV, what is the corresponding fermi temperature ?
A:-81.2 K
B:-812 K
C:-8120 K
D:-81200 K
Correct Answer:- Option-D
Question60:- Which of the following is not true for type I super conductor
A:-Exhibit complete Meissner Effect
B:-Perfect diamagnetism below Tc
C:-Also known as soft superconductors
D:-Exhibits a vortex state
Correct Answer:- Option-D
Question61:-Average Binding Energy of a nucleon in the nucleus of an atom is
A:-7.8eV
B:-7.8KeV
C:-7.8MeV
D:-7.8BeV
Correct Answer:- Option-C
Question62:-Weak nuclear forces act on
A:-both hadrons and leptons
B:-hadrons only
C:-all particles
D:-all charged particles
Correct Answer:- Option-A
Question63:-An admissible potential between the proton and neutron in a deutron is
A:-coulomb
B:-harmonic oscillator
C:-finite square well
D:-infinite square well
Correct Answer:- Option-C
Question64:-“Half life of a radio active material is 4 days. After 20 days the fraction remaining undecayed will be
A:-1/32
B:-1/20
C:-1/16
D:-1/8
Correct Answer:- Option-A
Question65:-Nuclear fusion requires high temperature because
A:-all nuclear reactions absorb heat
B:-the particles can not come closer unless they are moving rapidly
C:-the B.E. must be supplied from an external source
D:-mass defect must be supplied
Correct Answer:- Option-B
Question66:-The ripple factor in a rectifier circuit indicates
A:-amount of a.c. voltage present in output
B:-amount of d.c. voltage present in output
C:-change in d.c. voltage when input a.c. changes
D:-change in d.c. voltage when load. changes
Correct Answer:- Option-A
Question67:-The cathod of a zener diod in a voltage regulator is normally
A:-more positive than the anode
B:-more negative than the anode
C:-at +0.7 V
D:-grounded
Correct Answer:- Option-A
Question68:-An oscillator differs from an amplifier because
A:-it has more gain
B:-it requres no input signals
C:-it requres no d.c. supply
D:-it always has the same output
Correct Answer:- Option-B
Question69:-If maximum and minimum amplitudes of an amplitude modulated waves are 10V and 5V respectively, the
modulation index is
A:-2
B:-0.5
C:-3.3
D:-0.33
Correct Answer:- Option-D
Question70:-Thermal runaway is not possible in FET because as the temperature of FET increases
A:-the mobility decreases
B:-the transconductance increases
C:-the drain current increases
D:-none of the above
Correct Answer:- Option-A
Question71:-The dimension of Cantor set is
A:-0
B:-0.631
C:-1.683
D:-1
Correct Answer:- Option-B
Question72:-The fixed points of the Logistic map `x_(n+1)` = a`x_(n)` (1-`x_(n)`) are
A:-x=0 and x=1-`(1)/(a)`
B:-x=0 and x=1/a
C:-x=1 and x=1/a
D:-x=1 and x=1- `(1)/(a)`
Correct Answer:- Option-A
Question73:-A stable and unstable fixed point collide each other and vanish as the control parameter is decreased in
A:-Hopf bifurcation
B:-Pitchfork bifurcation
C:-Transcritical bifurcation
D:-Saddle node bifurcation
Correct Answer:- Option-D
Question74:-If l0> and l1> are eigen states of number operator which of these represent a state orthogonal to
`(1)/(sqrt(2))` (l0> + l1>)
A:-`(1)/(sqrt(2))` (l0> – l1>)
B:-`(1)/(sqrt(2))` (l0> + l1>)
C:-l1>
D:-l0>
Correct Answer:- Option-A
Question75:-If ln> represent an eigen vector of number operator with eigen value n, the state a†aa†aln> has eigen value` `
A:-n
B:-n+1
C:-n(n+1)
D:-n-1
Correct Answer:-Question Cancelled
Question76:-Among the following, the fullerene also known as “bucky ball” is
A:-`C_(70)`
B:-`C_(60)`
C:-`C_(76)`
D:-`C_(78)`
Correct Answer:- Option-B
Question77:-Which among the following is a quantum dot?
A:-`CdSe`
B:-Ti`O_(2)`
C:-Sn`O_(2)`
D:-Y`Co_(2)`
Correct Answer:- Option-A
Question78:-The temperature of cosmic background radiation is
A:-6K
B:-9.7K
C:-7.3K
D:-2.7K
Correct Answer:- Option-D
Question79:-Name the person who won Nobel prize in physics in 2011 for predicting the accelerating expansion of universe?
A:-R Feynmann
B:-Eric Drexler
C:-Paul Steinhardt
D:-S Perlmutter
Correct Answer:- Option-D
Question80:-The interaction which changes the flavor of a quark is?
A:-Strong interaction
B:-Electromagnetic interaction
C:-Weak interaction
D:-Gravitational interaction
Correct Answer:- Option-C
Question81:-The SE of the sample mean
A:-decreases in direct proportion to the sample
B:-decreases in inverse proportion to the sample
C:-increases in direct proportion to the sample
D:-does not depend on sample size
Correct Answer:- Option-B
Question82:-In an experimental research, a particular group is subjected to an innovative intervention and studied by way of
its effects. Which of the following design will you consider suit the study?
A:-After-only experimental design
B:-Pre-post experimental design
C:-Ex-post facto design
D:-Panel study design
Correct Answer:- Option-B
Question83:-Operational definition of a variable means defining it in a way that
A:-identifies specific behaviour in which it is reflected
B:-makes it possible to understand the variable
C:-makes research methodology clearer to the reader
D:-differentiates it from the other similar variables
Correct Answer:- Option-C
Question84:-Systematic sampling is a type of
A:-purposive sampling
B:-quota sampling
C:-non probability sampling
D:-random sampling
Correct Answer:- Option-D
Question85:-A publication which has significant reproduction of content from a previously published article without proper
reference or acknowledgement is
A:-a redundant publication
B:-an original publication
C:-an authentic publication
D:-a manuscript of a publication
Correct Answer:- Option-A
Question86:-Teaching in higher education is mainly for
A:-preparing students fit for seeking job
B:-lecturing on the information as per syllabus requirements
C:-helping students in learning ‘how to learn’
D:-helping students to prepare for and pass the examination for securing a degree
Correct Answer:- Option-C
Question87:-The activities related to a topic done in the form of ‘reflective practicum’ will help students
A:-get experiential learning
B:-acquire problem solving skill
C:-develop divergent thinking
D:-all of the above
Correct Answer:- Option-D
Question88:-The most suitable method for learning disabled children is
A:-behaviour guidance method
B:-remedial teaching
C:-brain storming
D:-none of the above
Correct Answer:- Option-A
Question89:-‘Professional and humane teachers’ has been put forth as its prime objective by
A:-NCF-2007
B:-NCFTE-2010
C:-NKC-Blue print -2007
D:-UGC VI pay Commission
Correct Answer:- Option-B
Question90:-The propounder of ‘meaningful reception learning’ is
A:-Bruner
B:-Bloom
C:-Ausubel
D:-Skinner
Correct Answer:- Option-C
Question91:-Which one of the following type of justice is not mentioned in the Preamble of the Indian Constitution?
A:-Political Justice
B:-Social Justice
C:-Economic Justice
D:-None of the above
Correct Answer:- Option-D
Question92:-Which is the Fundamental Right omitted from Article 19 of the Constitution by The Constitution (44th
Amendment) Act,1978?
A:-Right to acquire, hold and dispose of property.
B:-Right to freedom of speech and expression.
C:-Right to practice any profession or to carry on any occupation, trade or business.
D:-Right to form associations or unions.
Correct Answer:- Option-A
Question93:-What is the quorum to constitute a meeting of either house of the Parliament?
A:-1/5th of the total number of members of the House.
B:-1/10th of the total number of members of the House.
C:-1/3rd of the total number of members of the House.
D:-None of the above
Correct Answer:- Option-B
Question94:-What is the ground for declaration of emergency in a State under Article 356 of the Constitution?
A:-War.
B:-External aggression.
C:-Failure of constitutional machinery.
D:-Armed rebellion.
Correct Answer:- Option-C
Question95:-The President of India shall be elected by the members of an electoral college consisting of ………………………
A:-Elected members of Lok Sabha.
B:-Elected members of both Houses of Parliament.
C:-Elected members of the Legislative Assemblies of the States.
D:-Elected members of both Houses of Parliament and elected members of the Legislative Assemblies of the States.
Correct Answer:- Option-D
Question96:-Which is the Court with jurisdiction to decide cases under Protection of Women from Domestic Violence Act,
2005?
A:-Assistant Sessions Judge
B:-Chief Judicial Magistrate
C:-District/Sessions Judge
D:-Judicial First Class Magistrate
Correct Answer:- Option-D
Question97:-Designation of the Presiding Judge in Juvenile Justice Board under Juvenile Justice (Care and Protection of
Children) Act, 2006
A:-Judicial First Class Magistrate
B:-Principal Magistrate
C:-Chief Judicial Magistrate
D:-None of the above
Correct Answer:- Option-B
Question98:-Denote the section enlisting the exemption from disclosure of information according to Right to Information Act,
2005
A:-Section 2
B:-Section 5
C:-Section 8
D:-Section 15
Correct Answer:- Option-C
Question99:-Rule making power under Section 6 of Environment (Protection) Act, 1986 is entrusted with
A:-The Central Government
B:-The State Government
C:-The Pollution Control Board
D:-District Authorities
Correct Answer:- Option-A
Question100:-Days of employment ensured by the Mahatma Gandhi National Rural Employment Guarantee Act as per the
existing law?
A:-100
B:-120
C:-160
D:-180
Correct Answer:- Option-A