LDC Mixed Practice Test #413

Question 1

The sum of two supplementary angles is:

Accepted Answer

180° — Supplementary: two angles summing to 180°.

Answer

90°

Answer

120°

Answer

270°

Question 2

A.K. Gopalan and P. Krishna Pillai acted as volunteer captains during:‌​‍

Accepted Answer

Guruvayur Satyagraha — AKG and Krishna Pillai were the volunteer captains of the 1931-32 Guruvayur Temple entry movement.‌​‍

Answer

Paliyam Satyagraha

Answer

Salt Satyagraha

Answer

Vaikom Satyagraha

Question 3

If x + y = 12 and x − y = 4, then xy =

Accepted Answer

32 — x = 8, y = 4 → xy = 32.

Answer

24

Answer

28

Answer

30

Question 4

A student observes that when a coin is placed at the bottom of a beaker filled with water, it appears to be raised from its actual position. This phenomenon is primarily due to:

Accepted Answer

C. Refraction of light as it passes from water to air. — The apparent raising of an object submerged in water is a classic example of refraction. Light rays from the coin travel from water (denser medium) to air (rarer medium), bending away from the normal. This bending makes the light appear to originate from a shallower position to the observer's eye. Option A (reflection) causes images but not this specific apparent depth change. Option B (total internal reflection) would prevent light from exiting the water if the angle is too large. Option D (dispersion) is the splitting of light into colors, which is unrelated to the apparent depth phenomenon.

Answer

A. Reflection of light from the water surface.

Answer

B. Total internal reflection within the water.

Answer

D. Dispersion of light by the water molecules.

Question 5

Part XV:‌​‍

Accepted Answer

Elections — Elections (Art 324-329).‌​‍

Answer

Emergency

Answer

Tribunals

Answer

Services

Question 6

How many schedules does the Indian Constitution currently have?‌​‍

Accepted Answer

12 — Currently 12 schedules. ‌​‍Originally 8; 9th (1st Amendment), 10th (52nd), 11th (73rd), 12th (74th) added later.

Answer

8

Answer

10

Answer

14

Question 7

A 16-year-old student consistently struggles with impulse control, often making risky decisions without considering long-term consequences. This behavior is most likely linked to the underdevelopment of which brain region?

Accepted Answer

A. Prefrontal cortex — The prefrontal cortex, responsible for impulse control, decision-making, and executive functions, matures later in adolescence (into the mid-20s). The amygdala (B) regulates emotions but is fully developed by adolescence. The hippocampus (C) is involved in memory, and the cerebellum (D) in motor coordination—they are not primarily linked to impulse control.

Answer

B. Amygdala

Answer

C. Hippocampus

Answer

D. Cerebellum

Question 8

RAW (Research & Analysis Wing) founded:

Accepted Answer

1968 — 1968 as India's external intel agency.

Answer

1947

Answer

1971

Answer

1980

Question 9

What is the nature of the Attorney General's appointment?

Accepted Answer

Constitutional post — The Attorney General is a constitutional post, appointed under Article 76 of the Constitution.

Answer

Statutory post

Answer

Executive post

Answer

Judicial post

Question 10

The Subsidiary Alliance system was devised by:‌​‍

Accepted Answer

Lord Wellesley (Governor-General 1798-1805) — Indian states maintained Company troops, surrendered foreign relations. ‌​‍First accepted by Nizam of Hyderabad 1798. Brought Mysore, Awadh, Marathas into British orbit.

Answer

Robert Clive

Answer

Cornwallis

Answer

Dalhousie

LDC Mixed Practice Test #413