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

Q1. Which one of the following statement is incorrect?

A. Competitive firms are price takers and not price makers

B. Price discrimination is possible in monopoly only

C. Competitive firm always seeks to discriminate prices

D. Duopoly may lead to monopoly

Answer : Option C
Explaination / Solution:
No Explaination.

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

Q2. The fundamental frequency of an open pipe is N keeping the pipe vertical. It is submerged in water so that half of its length is filled with water. The fundamental frequency of air column is

A. N

B. 2N

C. N/2

D. 3N/4

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

Q3. Haploid chromosome number is 12. What is the number in monosomic?

A. 22

B. 25

C. 26

D. 23

Answer : Option D
Explaination / Solution:

Monosomic is an aneuploidy in which a chromosome is deficient of its homologous causing genetic imbalance resulting in weaker than normal form. In normal form(2n) 24 chromosome should be present but 1 homologous pair is absent so, only 23 chromosome will be present in monosomic individual.

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

Q4. Which one of the following plant is commonly used as green manure?

A. Crotalaria juncea

B. Dalbergia sissoo

C. Cassia fistula

D. Acacia nilotica

Answer : Option A
Explaination / Solution:

Green manure is organic substance that increases the fertility of soil. Crotalaria juncea is grown into and ploughed to soil that decompose and increase the fertility.

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

Q5. Meghna suffers from allergic asthma. After a blood test her leucocyte count displayed an abnormal increase in the number of :

A. Basophils

B. Eosinophils

C. Monocytes

D. Neutrophils

Answer : Option B
Explaination / Solution:

An absolute eosinophil count is a blood test that measures the number of white blood cells called eosinophils. Eosinophils become active when you have certain allergic diseases infections, and other medical conditions.

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

Q6. Hybridization of

C_{2}

and

C_{3}

H_{3} C - CH = C = CH - C H_{3}

are

Sp2, Spp

B. Sp2, Sp2

C. Sp, Sp

D. Sp,

S p^{3}

Answer : Option A
Explaination / Solution:

C2 is sp2 while C3 is sp (special case of allenes)

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

Q7.

A jet plane is travelling towards west at a speed of 1800 km/h. If the Earth’s magnetic field at the location has a magnitude of $5 \times 10 - 4 T$ and the dip angle is $3 0^{\circ}$ , voltage difference developed between the ends of the wing having a span of 25 m is approximately

A. 3.3 V

B. 3.7 V

C. 3.5 V

D. 3.1 V .

Answer : Option D
Explaination / Solution:

$e = V v l$

V = Vertical component of magnetic field

$e = ((B \sin ϕ) v l = 5 \times 10^{- 4} \times \frac{1}{2}) \times 500 \times 25 = 3.1 V$

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

Q8.

Suppose that the electric field part of an electromagnetic wave in vacuum is E = {(3.1 N/C) cos [(1.8 rad/m) y + (5.4

\times 1 0^{6}

rad/s)t]} i . Wavelength

λ

, frequency ν and the amplitude of the magnetic field part of the wave are

A. 5.5 m, 96 MHz, 100 nT

B. 4.0 m, 86 MHz, 250 nT

C. 3.5 m, 90 MHz, 200 nT

D. 3.5 m, 86 MHz, 100 nT

Answer : Option D
Explaination / Solution:
No Explaination.

UPSC Civil services Entrance exams General Studies test # General Science Respiration in Plants Prepare / Learn

Q9. In mitochondria, protein accumulate in

A. Outer membrane

B. Intermembrane space

C. Matrix

D. Inner membrane

Answer : Option B
Explaination / Solution:

In mitochondria, protein accumulate in intermembrane space between two layers of mitochondria.

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

Q10. The possible drawback of bioremediation method for oil spill containment is :

A. bacterial degradation is inefficient for large oil spills.

B. bacteria must be allowed to grow in low winds and in very calm waters.

C. large number of bacteria outcompete other organisms for oxygen creating dead zone.

D. Requires large amount of energy and bacterial secretions are toxic to aquatic creatures.

Answer : Option C
Explaination / Solution:

Bioremediation is a waste management technique that involves the use of organisms to neutralize pollutants from a contaminated site. In this method large number of bacteria outcompete other organisms for oxygen creating a dead zone.Dead zones are low- oxygen, or hypoxic, areas in the world's oceans and lakes.