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

Q1. Find odd one out

A. Transport operator

B. Owners of a saloon with more than 10 employees

C. A cobbler

D. A tuition master

Answer : Option B
Explaination / Solution:

Self-employed is a situation in which an individual works for himself instead of working for an employer that pays a salary or a wage. A self-employed individual earns his income through conducting profitable operations from a trade or business that he operates directly.

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

Q2. One end of a string of length l is connected to a particle of mass m and the other to a small peg on a smooth horizontal table. If the particle moves in a circle with speed v, T is the tension in the string, the net force on the particle directed towards the centre is

A. T

B. T+mv2l

C. T−mv2l

D. 0

Answer : Option A
Explaination / Solution:

According to Newton's third law of motion, the net force on a rotating particle is equal to Tension in the String. As the action (ie force towards the centre) and reaction (tension in the string) are equal in magnitude and opposite in direction.

UPSC Civil services Entrance exams General Studies test # General Science Organic compounds containing Nitrogen Prepare / Learn

Q3. Secondary amines react with the nitrosonium ion to generate:

A. anilines

B. oximes

C. N – nitrosoamines

D. imines

Answer : Option C
Explaination / Solution:

2^{o}

amines react with

H N O_{2}

to form N-nitrosoamine.

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

Q4. Technology started with

A. invention of steam engine

B. The conversion of natural resources into simple tools

C. invention of power loom

D. invention of printing press

Answer : Option B
Explaination / Solution:

The history of technology is the history of the invention of tools and techniques and is similar to other sides of the history of humanity. Technology can refer to methods ranging from as simple as language and stone tools to the complex genetic engineering and information technology that has emerged since the 1980s.

UPSC Civil services Entrance exams General Studies test # General Science Locomotion and Movement Prepare / Learn

Q5.

Each pectoral girdle :

i. has 2 pairs of bones, a pair of clavicle and a pair of scapula.
ii. scapula contains expanded process and glenoid cavity, the latter is for articulation of the head of humerus.

A. Statement i) is wrong and ii) is correct.

B. both are correct

C. Statement i) is correct and ii) is wrong.

D. both are wrong

Answer : Option A
Explaination / Solution:

The dorsal, flat, triangular body of scapula has a slightly elevated ridge called the spine which projects as a flat, expanded process called the acromion. Below the acromion is a depression called the glenoid cavity which articulates with the head of the humerus to form the shoulder joint.

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

Q6. Before use of mice for vaccine testing which animals were used to test the safety of batches of vaccine?

A. Alien

B. Dog

C. Monkey

D. Cat

Answer : Option C
Explaination / Solution:

The batches of vaccine are tested for safety before use on human beings. Earlier vaccine batches are tested on monkey but now transgenic mice are used to test the safety of vaccine.

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

Q7.

If an excess of $P_{4}$ is treated with $F_{2}$ , then_____will be produced wherein the oxidation number of P is +3. The compound is

A. PF5

B. PF6

C. PF

D. PF3

Answer : Option D
Explaination / Solution:

Whenever a reaction between an oxidising agent and a reducing agent is carried out, a compound of lower oxidation state is formed if the reducing agent is in excess and a compound of higher oxidation state is formed if the oxidising agent is in excess. This can be illustrated as follows:

P4 and F2 are reducing and oxidising agents respectively. If an excess of P4 is treated with F2, then PF3 will be produced, wherein the oxidation number (O.N.) of P is +3.
$P F_{4} (e x c e s s) + F_{2} \to P F_{3}$

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

Q8. Avoiding prostitution and homosexuality to get away from genital warts is called

A. Prophylaxis

B. Monoandry

C. Polyandry

D. Perphylaxis

Answer : Option A
Explaination / Solution:

Prophylaxis is the preventive method to avoid any disease which may be fatal to the person. Genital warts is caused by prostitution and homosexuality. Prophylaxis includes use of condom and other methods to get direct contact between two partners.

UPSC Civil services Entrance exams General Studies test # General Science National Income and Related Aggregates Prepare / Learn

Q9. Can the gross domestic product be greater than the gross national product?

A. Yes

B. Never

C. No

D. Can’t say

Answer : Option A
Explaination / Solution:
No Explaination.

UPSC Civil services Entrance exams General Studies test # General Science Electrostatic Potential and Capacitance Prepare / Learn

Q10. If one penetrates a uniformly charged metallic sphere, the electric field strength E

A. Decreases

B. remains the same as at the surface

C. increases

D. is zero at all points

Answer : Option A
Explaination / Solution:

Electric field due to a solid sphere of uniform charge density at points inside the sphere varies as