KAS Prelims Mixed Practice Test #329

Question 1

The process by which a solid directly changes to gas without passing through liquid is called:‌​‍

Accepted Answer

Sublimation — Camphor, naphthalene, iodine, dry ice sublime at room conditions.‌​‍

Answer

Evaporation

Answer

Condensation

Answer

Deposition

Question 2

A hydraulic lift system uses two pistons, one with a small cross-sectional area (A1) and the other with a larger cross-sectional area (A2). If a force F1 is applied to the smaller piston, causing it to move downwards by a distance d1, how does the force exerted by the larger piston (F2) and its upward displacement (d2) relate to F1 and d1, assuming ideal conditions?

Accepted Answer

B. F2 > F1 and d2 < d1 — According to Pascal's principle, the pressure applied to the small piston (P = F1/A1) is transmitted undiminished to the larger piston. Since the larger piston has a greater area (A2 > A1), it experiences a magnified force (F2 = P * A2, hence F2 > F1). By the principle of conservation of energy, the work input must equal the work output in an ideal system (F1 * d1 = F2 * d2). Therefore, to compensate for the increased force F2, the larger piston must move a proportionally smaller distance (d2 < d1).

Answer

A. F2 = F1 and d2 = d1

Answer

C. F2 < F1 and d2 > d1

Answer

D. F2 = F1 and d2 < d1

Question 3

Electoral bond introduced:‌​‍

Accepted Answer

2018 — 2018 Finance Act.‌​‍

Answer

2017

Answer

2020

Answer

2014

Question 4

The Temple Entry Proclamation of Travancore was issued on:‌​‍

Accepted Answer

12 November 1936 — Maharaja Sri Chithira Thirunal issued the Temple Entry Proclamation on 12 November 1936, opening all temples in Travancore to Hindus of all castes.‌​‍

Answer

12 November 1932

Answer

12 November 1940

Answer

15 August 1936

Question 5

Soviet Union dissolved in:‌​‍

Accepted Answer

1991 — USSR formally dissolved 26 December 1991. ‌​‍15 successor states including Russia, Ukraine, Kazakhstan. Gorbachev resigned.

Answer

1989

Answer

1993

Answer

2000

Question 6

The general formula of cycloalkanes is:

Accepted Answer

CₙH₂ₙ — Cycloalkanes share formula with alkenes: CₙH₂ₙ (e.g., cyclohexane C₆H₁₂).

Answer

CₙH₂ₙ₊₂

Answer

CₙH₂ₙ₋₂

Answer

CₙHₙ

Question 7

Group 17 elements are known as:‌​‍

Accepted Answer

Halogens — F, Cl, Br, I, At — halogens (Greek 'salt-formers').‌​‍

Answer

Noble gases

Answer

Alkali metals

Answer

Transition metals

Question 8

ICDS (Integrated Child Development Services):‌​‍

Accepted Answer

1975 — World's largest early childhood programme. ‌​‍Anganwadis deliver nutrition, immunisation, pre-school ed, health. Women & Child Development Ministry.

Answer

1947

Answer

2000

Answer

1991

Question 9

The image formed by a convex lens when the object is between F and optical centre is:‌​‍

Accepted Answer

Virtual, erect, magnified (same side as object) — Object inside F of convex lens → virtual, erect, magnified image — used in magnifying glass.‌​‍

Answer

Real, inverted

Answer

Virtual, inverted

Answer

Real, diminished

Question 10

The onset and intensity of the South-West Monsoon in India are significantly influenced by several factors. Which of the following plays the MOST crucial role in the initial establishment and progression of the monsoon winds across the Indian subcontinent?

Accepted Answer

B. The differential heating and cooling of the Indian landmass and the surrounding ocean. — The fundamental mechanism behind the South-West Monsoon is the significant temperature difference between the rapidly heating Indian landmass (creating a strong low-pressure centre) and the relatively cooler Indian Ocean (maintaining a high-pressure zone). This pressure gradient drives the moisture-laden winds from the ocean towards the land, initiating the monsoon. While the Jet Stream (A), ENSO (C), and the Western Ghats (D) influence its characteristics, variability, and rainfall distribution, the differential heating is the primary driver for its initial establishment and progression.

Answer

A. The shift of the Subtropical Westerly Jet Stream to the north of the Himalayas.

Answer

C. The El Niño-Southern Oscillation (ENSO) phenomenon in the Pacific Ocean.

Answer

D. The presence of the Western Ghats acting as a barrier to moisture-laden winds.

KAS Prelims Mixed Practice Test #329