VFA Mixed Practice Test #235

Question 1

Buffer solution:‌​‍

Accepted Answer

Resists change in pH on small addition of acid/base — Weak acid + its conjugate base (or vice versa). ‌​‍Henderson-Hasselbalch: pH = pKa + log([A⁻]/[HA]).

Answer

No pH change

Answer

Only neutral

Answer

Only acidic

Question 2

Galvanisation is coating iron with:‌​‍

Accepted Answer

Zinc — Galvanisation = coating iron with zinc to prevent rusting.‌​‍

Answer

Copper

Answer

Tin

Answer

Chromium

Question 3

Hole in ozone over:

Accepted Answer

Antarctica — Antarctic ozone hole.

Answer

Arctic

Answer

Equator

Answer

India

Question 4

Kingdom system 5 by:

Accepted Answer

R.H. Whittaker — Whittaker 1969.

Answer

Linnaeus

Answer

Haeckel

Answer

Woese

Question 5

The Kerala Land Reforms (Amendment) Act of 1969 introduced a ceiling on land holdings. What was the prescribed ceiling for a family of five members under this Act?

Accepted Answer

B. 10 acres of wetland or 20 acres of dryland — The Kerala Land Reforms (Amendment) Act of 1969 set a ceiling of 10 acres for wetland and 20 acres for dryland for a family of five members. This was to prevent concentration of land in the hands of a few and promote equitable distribution. Option A is incorrect as it overestimates the ceiling. Option C is also incorrect as it sets higher limits. Option D underestimates the ceiling, making it incorrect.

Answer

A. 15 acres of wetland or 25 acres of dryland

Answer

C. 20 acres of wetland or 30 acres of dryland

Answer

D. 5 acres of wetland or 15 acres of dryland

Question 6

Wetland of international importance — India:‌​‍

Accepted Answer

Chilika Lake, Keoladeo, Sundarbans, Wular, Vembanad, etc. (Ramsar sites) — India has 75+ Ramsar sites. ‌​‍Chilika largest brackish lake in Asia. Keoladeo Ghana (Bharatpur) famous bird sanctuary.

Answer

Only coast

Answer

Just rivers

Answer

Kerala backwaters

Question 7

Number missing: 2, 4, 8, 16, ?, 64

Accepted Answer

32 — ×2.

Answer

30

Answer

40

Answer

28

Question 8

Raja Ravi Varma known for:‌​‍

Accepted Answer

Paintings of Indian mythology — Famous painter (oleographs).‌​‍

Answer

Music

Answer

Dance

Answer

Sculptures

Question 9

Who discovered the Edakkal Caves and its rock art in Wayanad?

Accepted Answer

Fawcett — F. Fawcett, a British police superintendent, documented Edakkal in 1890.

Answer

Robert Bruce Foote

Answer

Babington

Answer

William Logan

Question 10

Oscar 2024 Best Picture:‌​‍

Accepted Answer

Oppenheimer — Oppenheimer won Best Picture.‌​‍

Answer

Poor Things

Answer

Killers of the Flower Moon

Answer

Barbie

VFA Mixed Practice Test #235