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

Q1. Which layer of alimentary canal forms villi?

A. Muscularis

B. Sub-mucosa

C. Mucosa

D. Serosa

Answer : Option C
Explaination / Solution:

Mucosa layer forms irregular folds (rugae) in the stomach and small finger-like foldings called villi in the small intestine

UPSC Civil services Entrance exams General Studies test # General Science Ray Optics and Optical Instruments Prepare / Learn

Q2. For small angles Snell’s law becomes

n_{1} i

n_{2}

B. i = r

n_{1} i

n_{2}

n_{2}

n_{1}

n_{2}

Answer : Option C
Explaination / Solution:
No Explaination.

UPSC Civil services Entrance exams General Studies test # General Science Human Health and Disease Prepare / Learn

Q3. The first antibiotic was discovered by

A. Koch

B. Louis Pasteur

C. R. Fleminng

D. A. Fleming

Answer : Option D
Explaination / Solution:

Penicillin from fungus Penicilliumnotatum, the first true antibiotic, was discovered by Alexander Fleming, Professor of Bacteriology at St. Mary's Hospital in London in 1928.

UPSC Civil services Entrance exams General Studies test # General Science Neural Control and Coordination Prepare / Learn

Q5. The autonomic nervous system or ANS :

i. Is truly autonomic i.e. independent of the CNS.
ii. Is also known as the VNS.
iii. Transmit impulse from CNS to involuntary organs and smooth muscles.

A. only iii) is correct.

B. only ii) and iii) are correct.

C. all are correct.

D. only i) and iii) are correct.

Answer : Option B
Explaination / Solution:

The autonomic nervous system or ANS is the division of peripheral nervous system that influences the function of internal organs. ANS is also known as VNS. These nerves transmit impulse from CNS to involuntary organs and smooth muscles.

UPSC Civil services Entrance exams General Studies test # General Science Thermal Properties of Matter Prepare / Learn

Q6. Which of these materials has low coefficient of volume expansion αV ?

A. pyrex glass

B. paraffin

C. water

D. alcohol

Answer : Option A
Explaination / Solution:

Glass is a ceramic material made from silica.So that it has lower coefficient of volume expansion in comparison to metal and liquid.

UPSC Civil services Entrance exams General Studies test # General Science Producer Behaviour and Supply Prepare / Learn

Q7. Cost function shows

A. Technological relationship between cost and output

B. Inverse relationship between inputs and cost

C. Technological relationship between cost and price

D. Economic relationship between inputs and cost

Answer : Option A
Explaination / Solution:
No Explaination.

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

Q8. Hydrocarbons are formed by :

A. Incomplete combustion of fuel used in automobiles

B. Complete combustion of fossil fuel

C. Combustion of fuel in automobiles, at high temperatures

D. Complete combustion of carbon

Answer : Option A
Explaination / Solution:

Hydrocarbons are formed by incomplete combustion of fossil fuels used in automobiles. When they undergo incomplete combustion, they are partially oxidised and produce other fragments of hydrocarbons along with CO and C.

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

Q9. Maximum magnetic moment is shown by