VFA Mixed Practice Test #774

Question 1

A convex lens placed in water — its focal length:‌​‍

Accepted Answer

Increases — Refractive index of water is closer to glass than air. ‌​‍By lensmaker's equation, focal length increases (lens becomes weaker).

Answer

Doubled

Answer

Decreases

Answer

Remains the same

Question 2

Which is NOT a vector quantity?‌​‍

Accepted Answer

Speed — Speed has only magnitude (scalar); velocity, force, displacement have direction (vectors).‌​‍

Answer

Velocity

Answer

Displacement

Answer

Force

Question 3

Mole fraction of solute in a solution with 2 mol solute and 8 mol solvent:‌​‍

Accepted Answer

0.2 — x_solute = n_solute/(n_solute + n_solvent) = 2/10 = 0.2. Sum x_i = 1.‌​‍

Answer

0.8

Answer

0.1

Answer

0.25

Question 4

Which type of glass is preferred for packaging parenteral solutions due to its high hydrolytic resistance and low alkali content?

Accepted Answer

A. Type I (borosilicate glass) — Type I borosilicate glass is preferred for parenteral solutions because it has the highest hydrolytic resistance and lowest alkali content, minimizing interaction with the drug. Type II glass is treated for reduced leaching but is not as resistant as Type I.

Answer

B. Type II (treated soda lime glass)

Answer

C. Type III (regular soda lime glass)

Answer

D. Type IV (general-purpose soda lime glass)

Question 5

The Kerala government is actively promoting the diversification of agricultural practices beyond traditional cash crops like rubber and coconut. Which of the following is the MOST crucial long-term economic benefit expected from this diversification strategy for small and marginal farmers in the state?

Accepted Answer

B. Enhanced resilience against market price fluctuations and climate risks. — Agricultural diversification helps small and marginal farmers mitigate risks by reducing their dependence on a single crop, making them less vulnerable to price volatility and adverse climate events. This enhanced resilience provides long-term economic stability, which is crucial for their livelihoods. While other options represent potential benefits, risk mitigation is the most fundamental economic advantage of diversification for this vulnerable group.

Answer

A. Increased export opportunities for niche agricultural products.

Answer

C. Reduction in the overall cost of cultivation through integrated farming.

Answer

D. Greater availability of agricultural credit and insurance schemes.

Question 6

When was the Consumer Protection Act of India enacted?‌​‍

Accepted Answer

1986, revised 2019 — Six consumer rights: safety, information, choice, redressal, consumer education, be heard. 2019 Act adds e-commerce, product liability.

Answer

1947

Answer

1991

Answer

2015

Question 7

NPCI stands for:‌​‍

Accepted Answer

National Payment Corporation of India — National Payments Corporation of India — operates UPI, RuPay, etc.‌​‍

Answer

New Payment Corporation of India

Answer

National Pay Commission of India

Answer

National Payments Council of India

Question 8

Formic acid (HCOOH) is found naturally in:

Accepted Answer

Ant bites — Formic acid (methanoic acid) is the simplest carboxylic acid; produced by ants and bee stings.

Answer

Vinegar

Answer

Lemon

Answer

Battery

Question 9

Thekkady, the entry point to Periyar Tiger Reserve, is in:‌​‍

Accepted Answer

Idukki — Thekkady is located in Idukki district and serves as the main entry to Periyar Tiger Reserve.‌​‍

Answer

Ernakulam

Answer

Pathanamthitta

Answer

Kottayam

Question 10

Which of the following are novels by Jane Austen?‌​‍

Accepted Answer

Pride and Prejudice, Sense and Sensibility, Emma, Mansfield Park — Early 19th century English gentry life. ‌​‍Novels of manners. Unsparing social commentary with irony.

Answer

1984

Answer

War and Peace

Answer

Dracula

VFA Mixed Practice Test #774