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UPSC Civil services Entrance exams General Studies test # General Science Rural Development Prepare / Learn

Q1. Micro credit programme

A. Credit provision made by small farmers

B. Credit provision made by large farmers

C. None

D. Credit provisions made by self help group to its members

Answer : Option D
Explaination / Solution:

SHGs promote saving habit among rural household.

UPSC Civil services Entrance exams General Studies test # General Science Cell Cycle and Cell Division Prepare / Learn

Q2. Which one proceeds reformation of nuclear envelope during M-phase of cell cycle?

A. Formation of contractile ring and transcription

B. Transcription from chromosomes and reassemble of nuclear lamina

C. Formation of contractile ring and phragmoplast

D. Decondenstion of chromosomes with appearance of nuclear lamina.

Answer : Option D
Explaination / Solution:

Before the completion of Mitosis reapperance of nuclear membrane takes place along with formation of nucleolus so that the cells bocemo separate enetities after cytokinesis but having same chromosome number as parent cells.

UPSC Civil services Entrance exams General Studies test # General Science Motion in A Plane Prepare / Learn

Q3. An arbitrary vector v can be expressed as

A. a sum of three mutually perpendicular unit vectors each multiplied by the same scalar constant

B. a sum of three mutually perpendicular unit vectors each multiplied by a some scalar constant

C. a sum of three mutually perpendicular unit vectors each multiplied scalar constant equal to 1

D. a sum of three mutually perpendicular unit vectors each multiplied scalar constant equal to -1

Answer : Option B
Explaination / Solution:

Set of elements (vectors) in a vector space is called a basis, or a set of basis vectors, if the vectors are linearly independent and every vector in the vector space is a linear combination of this set.In more general terms, a basis is a linearly independent spanning set.

Given a basis of a vector space, every element of vector space can be expressed uniquely as a linear combination of basis vectors, whose coefficients are referred to as vector coordinates or components.

We can represent vector v as

$\vec{v} = x \hat{i} + y \hat{j} + z \hat{k}$

UPSC Civil services Entrance exams General Studies test # General Science Surface Chemistry Prepare / Learn

Q4. Decomposition of

H_{2} O_{2}

can be prevented in the presence of

A. Palladium

B. Nickel

C. Sulphuric acid

D. Glycerol

Answer : Option D
Explaination / Solution:

Glycerol prevents the decomposition of

H_{2} O_{2}

UPSC Civil services Entrance exams General Studies test # General Science Development Experience Of India a Comparison with Neighbors Prepare / Learn

Q5. Which of the following is false regarding China?

A. Sex ratio is biased and low

B. Fertility rate is low

C. Density of population is lowest

D. Population is very small

Answer : Option D
Explaination / Solution:

China has the largest population in the world with 1.379 billion peoples.

UPSC Civil services Entrance exams General Studies test # General Science Electric Charges and Fields Prepare / Learn

Q6. For charges

q_{1} a n d q_{2}

separated by a distance R the magnitude of the electrostatic force is given by

A.
F=q14πϵ0R2

B. F=q q2q21 4πϵ0R3

C.
F=q1q24πϵ0R

D. F=q q2q21 4πϵ0R2

Answer : Option D
Explaination / Solution:

According to Coulomb’s law the force between two point charges is

(a) The force is directly proportional to the product of magnitude of charges i.e. $F \propto | q_{1} | | q_{2} |$

(b) The force is inversly proportional to the square of distance between two charges i.e. $F \propto \frac{1}{r^{2}} (I n v e r s e s q u a r e l a w)$

Combining both

$F \propto \frac{| q_{1} | | q_{2} |}{r^{2}} . . . . . . (i)$

$F = k \frac{| q_{1} | | q_{2} |}{r^{2}}$

Where k is a constant of proportionality known as force constant having different value in different systems

UPSC Civil services Entrance exams General Studies test # General Science Biotechnology Principles and Processes Prepare / Learn

Q8. The enzyme ligase is used to

A. Cut the vector DNA

B. Cut goi from the source DNA

C. Join vector and goi (gene of interest)

D. Breakdown of lipids to fatty acids and glycerol

Answer : Option C
Explaination / Solution:

DNA ligase is a specific type of enzyme, a ligase, that facilitates the joining of DNA strands together by catalyzing the formation of a phosphodiester bond. It plays a role in repairing single-strand breaks in duplex DNA in living organisms. The enzyme ligase is used to join vector and gene of interest to form hybrid genome that can be introduced into vectors.

UPSC Civil services Entrance exams General Studies test # General Science Excretory Products and their Elimination Prepare / Learn

Q9. Towards the centre of the inner concave surface of the kidney is a notch called:

A. Medulla

B. Calyces

C. Cortex

D. Hilum

Answer : Option D
Explaination / Solution:

On the medial margin of the kidney is concave region called the renal hilum. The renal hilum is the entrance to the renal sinus. Structures such as the renal veins, artery, nerves and lymphatic vessels are located in the renal hilum.

UPSC Civil services Entrance exams General Studies test # General Science Thermodynamics Prepare / Learn

Q10. If

C_{p}

and

C_{v}

are molar specific heat capacities of an ideal gas at constant pressure and volume respectively and R is the universal gas constant, relation between the three is

C_{p}

C_{v}

= 2R

C_{p}

C_{v}

= R

C_{p}

C_{v}

= 2R

C_{p}

C_{v}

= R

Answer : Option D
Explaination / Solution:

This is Meyer's Equation

At constant volume as there is no work done on the gas(ΔV=0) all the heat supplied goes for the increase of internal energy. Hence temperature of body increases with less supply of heat. Whereas at constant pressure heat supplied accounts for both internal energy and work done on the gas.

if we increase temp. of 1 mole of gas by 1K or 1C then

$\begin{aligned} P Δ V = n R Δ T \\ n = 1 m o l e \\ Δ T = 1^{\circ} C \\ P Δ V = R \\ W = P Δ V \\ C_{P} > C_{V} \\ C_{P} - C_{V} = W \\ C_{P} - C_{V} = R \end{aligned}$