VFA Mixed Practice Test #209

Question 1

Kerala urbanisation %:‌​‍

Accepted Answer

~48% — Among highest in India.‌​‍

Answer

70%

Answer

20%

Answer

30%

Question 2

A novel drug compound formulated as an aqueous solution exhibits significant degradation when exposed to light, leading to a visible color change. This type of degradation is primarily due to:

Accepted Answer

C. Photolysis — Photolysis is the chemical decomposition or degradation of a compound caused by exposure to light energy. The observation of a color change upon light exposure is a classic indication of photolytic degradation. Hydrolysis is degradation by water, oxidation by oxygen, and racemization is the interconversion of enantiomers, none of which are primarily triggered by light exposure in this manner.

Answer

A. Hydrolysis

Answer

B. Oxidation

Answer

D. Racemization

Question 3

Polygamy means marriage to multiple spouses. Polygyny is:‌​‍

Accepted Answer

One man, multiple wives — Polygyny (1 man + multiple wives) more common historically. ‌​‍Polyandry (1 woman + multiple husbands) rare — e.g., Toda, some Himalayan communities.

Answer

Group marriage

Answer

Polyandry

Answer

Monogamy

Question 4

Mount Everest in:

Accepted Answer

Nepal-China — Nepal-China (Tibet) border.

Answer

India-China

Answer

Nepal-India

Answer

Tibet-India

Question 5

Conservation of energy for spring: ½kx²:‌​‍

Accepted Answer

Elastic potential energy — U = ½kx² in spring extended/compressed by x. Hooke's law: F = -kx.‌​‍

Answer

Heat

Answer

Work

Answer

Kinetic energy

Question 6

Which of the following elements in the periodic table has the highest electronegativity value, making it the most likely to form anions in chemical reactions?

Accepted Answer

B. Chlorine (Cl) — Chlorine (Cl) has the highest electronegativity among the given options (3.16 on the Pauling scale), making it the most likely to gain electrons and form anions. Sodium, potassium, and calcium are metals with low electronegativity and tend to lose electrons, forming cations instead.

Answer

A. Sodium (Na)

Answer

C. Potassium (K)

Answer

D. Calcium (Ca)

Question 7

Chimmini Wildlife Sanctuary is in which district?‌​‍

Accepted Answer

Thrissur — Chimmini Wildlife Sanctuary is in Thrissur district, surrounding the Chimmini reservoir.‌​‍

Answer

Idukki

Answer

Ernakulam

Answer

Palakkad

Question 8

When a body of mass 'M' is placed at the centre of earth, its weight will be:‌​‍

Accepted Answer

Zero — At Earth's centre, gravitational acceleration g=0, so weight = mg = 0.‌​‍

Answer

2M

Answer

M/2

Answer

M

Question 9

Lipase digests:‌​‍

Accepted Answer

Fats — Fat digestion.‌​‍

Answer

Carbohydrates

Answer

Nucleic acids

Answer

Proteins

Question 10

Diffraction effects are most noticeable when:‌​‍

Accepted Answer

λ ~ obstacle size — Visible light (400-700 nm) diffracts noticeably on small apertures/slits. ‌​‍Sound diffracts easily (large λ).

Answer

λ << obstacle

Answer

λ >> obstacle

Answer

Never

VFA Mixed Practice Test #209