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

Q1. The list of risk factors associated with hypertension doesn’t include :

A. hypoglycaemia and diabetes insipidus

B. hyperglycemia and diabetes mellitus

C. vitamin D deficiency

D. birth control pills

Answer : Option A
Explaination / Solution:

Hypertension can cause a number of effects on the functioning of different vital functions but hypertension does not associated with hypoglycemia and diabetes insipidus.

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

Q2. The amplitude of the magnetic field part of a harmonic electromagnetic wave in vacuum is

B_{0}

= 510 nT. Amplitude of the electric field part of the wave is

A. 173N/C

B. 153 N/C

C. 158N/C

D. 163N/C

Answer : Option B
Explaination / Solution:
No Explaination.

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

Q3. The number of types of bonds between two carbon atoms in calcium carbide is

A. One sigma, one pi

B. Two sigma, one pi

C. One sigma, two pi

D. Two sigma, two pi

Answer : Option C
Explaination / Solution:

CaC2 has a combination of bonds. It is an ionic lattice that has Ca2+ cations and acetylide C22- anions. Within each C22-there is a triple bond between the 2C atoms, consisting of 1 sigma and 2 pi bonds.

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

Q4.

A circular coil of radius 8.0 cm and 20 turns is rotated about its vertical diameter with an angular speed of 50 rad $s^{- 1}$ in a uniform horizontal magnetic field of magnitude $3 \times 10^{- 2}$ T. If the coil resistance is $10 Ω$ , maximum emf induced in the coil,maximum value of current in the coil and average power loss due to Joule heating are

A. 0.303 V, 0.0603 A,0.018 W

B. 0.603 V, 0.0603 A,0.038 W

C. 0.603 V, 0.0603 A,0.018 W .

D. 0.603 V, 0.0303 A,0.018 W

Answer : Option C
Explaination / Solution:

$e = N B A ω = 20 \times 3 \times 10^{- 2} \times (3.14 \times 0.08 \times 0.08) \times 50 = 0.603 V$

$i = \frac{e}{R} = \frac{0.603}{10} = 0.0603 A$

average power loss due to joule heating

$P = \frac{e i}{2} = \frac{0.603 \times 0.0603}{2} = 0.018 W$

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

Q5. Fermentation is

A. Excretory process

B. Incomplete oxidation

C. Anaerobic respiration

D. Aerobic respiration

Answer : Option C
Explaination / Solution:

Fermentation is the process of anaerobic respiration in which incomplete oxidation leads to formation of ethanol in absence of oxygen. Fermentation occurs in yeast.

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

Q6. Fertilizers will not

A. cause biological control

B. pollute water

C. cause eutrophication

D. increase fertility

Answer : Option A
Explaination / Solution:

Fertilizers will increase the fertility of soil and higher production of crop. When reaches to water bodies it causes eutrophication. The chemicals present in it also pollute the water. Fertilizer never acts as biological control against harmful organisms.

UPSC Civil services Entrance exams General Studies test # General Science Haloalkanes and Haloarenes Prepare / Learn

Q7. Triiodomethane (Iodoform) is

A. Pesticide

B. degreasing agent

C. antiseptic drug

D. Refrigerant

Answer : Option C
Explaination / Solution:

The compound finds small scale use as a disinfectant.Around the beginning of the 20th century it was used in medicine as a healing and antiseptic dressing for wounds and sores, although this use is now superseded by superior anticeptics..

UPSC Civil services Entrance exams General Studies test # General Science Dual Nature of Radiation and Matter Prepare / Learn

Q8. If the wavelength of light incident on photo-electric cell be reduced from 4000