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

Q1. SEB’s which distribute electricity incur losses because

A. Equal distribution of electricity

B. Distribution of electricity to farmers at cheap rate

C. Low prices of electricity

D. Transmission and distribution losses

Answer : Option D
Explaination / Solution:

State Electricity Boards (SEBs), which distribute electricity, incur losses . This is due to transmission and distribution losses.

UPSC Civil services Entrance exams General Studies test # General Science The p-Block Elements Prepare / Learn

Q2. The reagent used to distinguish between

H_{2} O_{2}

and

O_{3}

K M n O_{4}

C. Bleaching powder

D. Starch and iodine

Answer : Option B
Explaination / Solution:

H_{2} O_{2}

can decolorize the color of

K M n O_{4}

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

Q3. Main function of lenticel is

A. Bleeding

B. Guttation

C. Gaseous exchange

D. Transpiration

Answer : Option C
Explaination / Solution:

Lenticels are minute pore in stems through which exchange of gases takes place between plant and atmosphere.

UPSC Civil services Entrance exams General Studies test # General Science Botany-Sexual Reproduction in Flowering Plants Prepare / Learn

Q4. Seed dispersal helps the species to

A. Colonies in new areas

B. Acclamation of species

C. Variation of species

D. Migration of species

Answer : Option A
Explaination / Solution:

Seeds have adaptive strategies for dispersal to new habitat and help the species to colonies in new areas. Dispersal may occurs physically or with the help of birds and other animals.

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

Q5. One mole of hydrogen gas is heated at constant pressure from 300 K to 420 K. Calculate the increase in its internal energy.

A. 2.15 kJ

B. 2.65 kJ

C. 2.85 kJ

D. 2.49 kJ

Answer : Option D
Explaination / Solution:

Hydrogen is a diatomic gas. (CV = 2.5R)

Change in internal energy

$Δ U = n C_{V} Δ T = 1 \times 2.5 \times 8.31 \times 120 = 2493 J = 2.49 K J$

UPSC Civil services Entrance exams General Studies test # General Science Organisms and Populations Prepare / Learn

Q6. Unit of evolution and ecology is

A. Community

B. Population

C. Individual

D. Ecosystem

Answer : Option B
Explaination / Solution:

The unit of evolution and ecology is population. Evolution occurs due to change in genome of individual that affects the whole population. Ecology is the study of population along with their variation in ecosystem.

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

Q7. It is the technique of growing plants in above-ground strands provided with fine mist of normal solution.

A. Hygroponics

B. Aeroponics

C. Chemoponics

D. Hydroponics

Answer : Option B
Explaination / Solution:

Aeroponics is the technique of growing plants in above ground strands provided with fine mist of normal solution. It is used to know the deficiency symptoms of minerals.

UPSC Civil services Entrance exams General Studies test # General Science Digestion and Absorption Prepare / Learn

Q8.

Match the following:

Digestive Disorder	Cause
a) Constipation	i) gallstones
b) Jaundice	ii) reflex actionanxiety
c) Indigestion	iii) intentinal ischemia
d) Vomiting	iv) irregular bowel movements

A. a) - ii b) - i c) - iv d) - iii

B. a) - iii b) - iv c) - ii d) - i

C. a) - ii b) - iii c) - ii d) - iv

D. a) - iv b) - i c) - ii d) - iii

Answer : Option D
Explaination / Solution:

The causes of indigestion are inadequate enzyme secretion, anxiety, food poisoning, over eating, and spicy food. In constipation, the bowel movements occur irregularly. In jaundice, deposition of bile pigments result in gall stones. A reflex action is controlled by the vomit centre in the medulla.

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

Q9. Which of the following polymers have tetrafluoroethene monomer units?

A. Acrilan

B. Teflon

C. Polystyrene

D. Nylon

Answer : Option B
Explaination / Solution:

Teflon is used in making non stick utensil surface.

UPSC Civil services Entrance exams General Studies test # General Science Botany-Reproduction in Organisms Prepare / Learn

Q10. Statement I: Asexual reproduction involves fusion of gametes.
Statement II: Asexually produced offspring are genetically identical.
Statement III: Asexual reproduction occurs in unfavorable condition only.

A. Statement I and II both are correct.

B. Only statement II is correct.

C. Only statement I is correct.

D. Only statement III is correct

Answer : Option B
Explaination / Solution:

In asexual reproduction, fusion of gametes do not takes place and asexual reproduction occurs in favorable conditions. As fusion of gametes do not takes place, all the individuals are genetically identical to each other.