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UPSC Civil services Entrance exams General Studies test # General Science Indian Economy 1950 to 1990 Prepare / Learn

Q1. Schedule C industries development were left to

A. Public sector

B. None

C. Both

D. Private sector

Answer : Option D
Explaination / Solution:

Schedule C includes all the remaining industries and their future development would be in general be left to the initiative and enterprise of the private sector

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

Q2. In a rain shadow area biome is represented by

A. Desert

B. Tundra

C. Taiga

D. Evergreen forests

Answer : Option A
Explaination / Solution:

A rain shadow is a dry area on the leeward side of a mountainous area (away from the wind). The mountains block the passage of rain-producing weather systems and cast a "shadow" of dryness behind them. Wind and moist air is drawn by the prevailing winds towards the top of the mountains, where it condenses and precipitates before it crosses the top. The air, without much moisture left, advances behind the mountains creating a drier side called the "rain shadow".

UPSC Civil services Entrance exams General Studies test # General Science Government Budget and the Economy Prepare / Learn

Q3. A surplus budget is one where

A. Estimated revenues< estimated Receipts of the govt.

B. Estimated revenues= estimated expenditure

C. All of them

D. Estimated revenues> estimated expenditure

Answer : Option D
Explaination / Solution:
No Explaination.

UPSC Civil services Entrance exams General Studies test # General Science Measures of Central Tendency Prepare / Learn

Q4. The mean of 40 observations was 160. It was detected on re-checking that the value 165 was wrongly copied as 125 for computation of mean. Find the correct mean.

A. 4

B. 151

C. 161

D. 650

Answer : Option C
Explaination / Solution:

Mean is calculated as the sum of the values of all observations divided by the number of observations
N= 40 , Mean = 160
Sum of the values of all observations = 40 x 160 = 6400
Sum of the values of all observations after correction= 6400 -125 = 6275+165 = 6440
Correct Mean = 6440/40 = 161

UPSC Civil services Entrance exams General Studies test # General Science Employment Growth Informational and other Issues Prepare / Learn

Q5. When a person quits in order to find a second job it may cause temporary unemployment

A. Cyclic unemployment

B. Open unemployment

C. Frictional unemployment

D. Rural unemployment

Answer : Option C
Explaination / Solution:

Frictional unemployment is when workers leave their jobs to find better ones. It's usually a voluntary exit but can also result from a layoff or termination with cause. Friction is the time, effort, and expense it takes the worker to find a new job.

UPSC Civil services Entrance exams General Studies test # General Science Laws of Motion Prepare / Learn

Q6.

A shell of mass 0.020 kg is fired by a gun of mass 100 kg. If the muzzle speed of the shell is 80 m $s^{- 1}$ , what is the recoil speed of the gun?

A. 1.8 cm/s

B. 1.6 cm

s^{- 1}

C. 1.7 cm/s

D. 1.9 cm/s

Answer : Option B
Explaination / Solution:

Massof shell, $m = 0.02 k g$

Mass of gun, $M = 100 k g$

Speed of shell, $v = 80 m s^{- 1}$

Let V be the recoil speed of the gun. According to the law of conservation of momentum,

Initial momentum = Final momentum

$0 = m v + M V V = - \frac{m v}{M} = - \frac{0.02 \times 80}{100} V = - 0.016 m s^{- 1} = - 1.6 c m s^{- 1}$

Negative sign indicates that the gun moves backward as the bullet moves forward.

UPSC Civil services Entrance exams General Studies test # General Science Biotechnology and its Applications Prepare / Learn

Q7. Rate of fluorescence in a titer plate in ELISA is

A. the indication of the false test

B. does not gives any idea

C. directly proportional to antigen

D. inversely proportional to antigen

Answer : Option C
Explaination / Solution:

The rate of fluorescence in a titer plate in ELISA is directly proportional to antigens present in the sample. This indicates presence of pathogen in the sample also.

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

Q8. In India, medical termination of pregnancy was legalized in ------.

A. 1971

B. 2001

C. 1947

D. 1991

Answer : Option A
Explaination / Solution:

MTP (Medical termination of pregnancy) was legalized in 1971 in India with exception of female feticides after sex determination using Ultrasonography or other means.

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

Q9. A piece of copper and another of germanium are cooled from room temperature to 80K. The resistance

A. of each of them decreases

B. copper decreases and that of germanium increases

C. copper increases and that of germanium decreases

D. of each of them increases

Answer : Option B
Explaination / Solution:

Copper is a conductor and we know that for conductors, resistance is directly proprtional to temperature. Therefore on decreasing temperature resistance also decreases. Whereas, germanium is a semiconductor and for semiconductors, resistance is inversely proportional to temperature. So on decreasing temperature resistance increases.

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

Q10.

A beam of alpha particles is incident on a target of lead. A particular alpha particle comes in “head-on” to a particular lead nucleus and stops 6.5

\times 1 0^{- 14}

m away from the center of the nucleus. (This point is well outside the nucleus.) Assume that the lead nucleus, which has 82 protons, remains at rest. The mass of the alpha particle is 6.64