General Science | General Studies test | UPSC Civil services Entrance exams Online Objective Test

UPSC Civil services Entrance exams General Studies test # General Science Organisation of Data Prepare / Learn

Q1. In a manifold table we have data on _______

A. More than three character

B. More than one character

C. Only one character

D. More than two character

Answer : Option B
Explaination / Solution:

Manifold data table explains more than three characteristics of the data.

UPSC Civil services Entrance exams General Studies test # General Science Inflation: Problem and Policies Prepare / Learn

Q2. Which is not true about inflation

A. None

B. Real increase fall

C. Purchasing power fall

D. Nominal income increase

Answer : Option D
Explaination / Solution:
No Explaination.

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

Q3. A jet lands on an aircraft carrier at 60 m/s. What is its acceleration if it stops in 2.0 s?

A. -10

m s^{- 2}

-30

m s^{- 2}

B. -20

m s^{- 2}

C. 30

m s^{- 2}

D. -10

m s^{- 2}

Answer : Option A
Explaination / Solution:

Initial velocity u = 60 m/s

As it stops then final velocity v = 0 m/s

Time taken t = 2.0 s

We know,

v-u = at

=> 0-60= 2a

=> a = $\frac{- 60}{2} = - 30 m / s^{2}$

-ve sign shows velocity is decreasing.

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

Q4. If a star emitting orange light moves away from the earth, its color will

A. turns gradually blue

B. appear yellow

C. appear red

D. remain the same

Answer : Option C
Explaination / Solution:
No Explaination.

UPSC Civil services Entrance exams General Studies test # General Science Forms of Market and Price Determination Prepare / Learn

Q5. What should firm do when marginal revenue is greater than marginal cost?

A. Firms should expand output

B. Effect should be made to make them equal

C. All of above

D. Prices should be covered down

Answer : Option A
Explaination / Solution:
No Explaination.

UPSC Civil services Entrance exams General Studies test # General Science Botany-Principles of Inheritance and Variation Prepare / Learn

Q6. In human males, some recessive genes express their effect because

A. Only one Y-chromosome

B. Only two sex chromosome

C. Single genome

D. Only one X-chromosome

Answer : Option D
Explaination / Solution:

Recessive genes are expressed only in case of homozygous condition but sex chromosomes of males do not have opposite alleles on Y-chromosome. So, the recessive gene located on X-chromosome get expressed in males.

UPSC Civil services Entrance exams General Studies test # General Science Microbes in Human Welfare Prepare / Learn

Q7. The biological control of agricultural pests, unlike chemical control is

A. Polluting

B. Toxic

C. Self-perpetuating

D. Very expensive

Answer : Option C
Explaination / Solution:

The biological control of agricultural pest, unlike chemical control is called self-perpetuating as biological control has power to renew or perpetuate oneself of itself for indefinite length of time.

UPSC Civil services Entrance exams General Studies test # General Science Body Fluids and Circulation Prepare / Learn

Q8. For a healthy individual, calculate stroke volume for him if other values are; heart beat per minute = 72 and cardiac output is 5 litre?

A. 0.08

B. 0.06

C. 0.09

D. 0.05

Answer : Option B
Explaination / Solution:

E Stroke volume of healthy individual can be calculated by dividing cardiac output by number of heart beat per minute. So stroke volume = 5/ 72 = 0.0694.

UPSC Civil services Entrance exams General Studies test # General Science Chemical Bonding and Molecular Structure Prepare / Learn

Q9. The

s p^{3} d^{2}

hybridization of central atom of a molecule would lead to

A. Tetrahedral geometry

B. Trigonal bipyramidal geometry

C. square planar geometry

D. Octahedral geometry

Answer : Option D
Explaination / Solution:

In sp3d2 Hybridization one s, three p and two d-orbitals get hybridized to form six sp3d2 hybrid orbitals which adopt octahedral arrangement as given in image below

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

Q10.

It is desired to measure the magnitude of field between the poles of a powerful loud speaker magnet. A small flat search coil of area 2 $c m^{2}$ with 25 closely wound turns, is positioned normal to the field direction, and then quickly snatched out of the field region. Equivalently, one can give it a quick $9 0^{\circ}$ turn to bring its plane parallel to the field direction). The total charge flown in the coil (measured by a ballistic galvanometer connected to coil) is 7.5 mC. The combined resistance of the coil and the galvanometer is $0. 50 Ω$ . Field strength of magnet is

A. 0.85 T

B. 0.90 T

C. 0.65 T

D. 0.75 T .

Answer : Option D
Explaination / Solution:

$\begin{aligned} i = \frac{d q}{d t} = \frac{e}{R} \\ | e | = \frac{d ϕ}{d t} = \frac{(d N B A)}{d t} \end{aligned}$

$\begin{aligned} q = \frac{N B A}{R} \\ B = \frac{q R}{N A} = \frac{7.5 \times 10^{- 3} \times 0.5}{25 \times 2 \times 10^{- 4}} = 0.75 T \end{aligned}$