KAS Prelims Mixed Practice Test #380

Question 1

Kerala Students' Scholarship schemes:

Accepted Answer

Multiple (minority, merit, etc) — Diverse scholarships.

Answer

Only merit

Answer

None

Answer

Only SC/ST

Question 2

Guard cells control the opening and closing of:‌​‍

Accepted Answer

Stomata — Kidney-shaped guard cells regulate stomatal aperture for gas exchange.‌​‍

Answer

Root hairs

Answer

Xylem vessels

Answer

Lenticels

Question 3

Russia invaded Ukraine in:‌​‍

Accepted Answer

2022 (24 February) — Russia launched full-scale invasion of Ukraine 24 February 2022. ‌​‍Largest war in Europe since WWII. NATO supports Ukraine with weapons/aid.

Answer

2014

Answer

2020

Answer

2008

Question 4

Cube with side 3 cm painted. Cut into 1cm cubes. Total:

Accepted Answer

27 — 3³ = 27 small cubes.

Answer

9

Answer

18

Answer

36

Question 5

Voting age:‌​‍

Accepted Answer

18 — 18 years (61st Amendment, 1989).‌​‍

Answer

16

Answer

21

Answer

25

Question 6

The official language of the United Nations does NOT include:

Accepted Answer

Hindi — The 6 official UN languages are English, French, Spanish, Chinese, Russian, and Arabic. Hindi is NOT a UN official language.

Answer

Chinese

Answer

Arabic

Answer

French

Question 7

Mass defect gives binding energy via:‌​‍

Accepted Answer

E = mc² (Einstein) — Binding energy per nucleon maximum around Fe-56 (~8.8 MeV/nucleon). ‌​‍Fission of heavy, fusion of light release energy.

Answer

E = kT

Answer

E = ½mv²

Answer

E = qV

Question 8

Dopamine role:‌​‍

Accepted Answer

Reward, movement — Multiple roles.‌​‍

Answer

None

Answer

Only hearing

Answer

Only vision

Question 9

Which ICT tool is BEST suited for demonstrating a chemical reaction in a Chemistry classroom where students can manipulate variables in real-time?

Accepted Answer

B. Simulation software like PhET Interactive Simulations — Simulation software like PhET allows students to interactively manipulate variables (e.g., concentration, temperature) and observe real-time outcomes of chemical reactions. Static images, videos, and 3D models lack the dynamic and experimental engagement required for conceptual clarity.

Answer

A. Static images from a textbook

Answer

C. Pre-recorded video lectures

Answer

D. 3D printed models of molecules

Question 10

'One of (A) the boy (B) is (C) absent (D).' Error is in:‌​‍

Accepted Answer

B — 'One of' takes plural noun. Correct: 'One of the boys is absent.'‌​‍

Answer

A

Answer

C

Answer

D

KAS Prelims Mixed Practice Test #380