DCOA Mixed Practice Test #577

Question 1

Chaucer's 'Canterbury Tales' language:‌​‍

Accepted Answer

Middle English — ~1387-1400. ‌​‍Pilgrims' tales on way to Canterbury. Father of English poetry. ‌​‍Old English: Beowulf.

Answer

Latin

Answer

Old English

Answer

Modern English

Question 2

NCERT established:‌​‍

Accepted Answer

1961 — NCERT Act 1961.‌​‍

Answer

1947

Answer

1986

Answer

1975

Question 3

Intensity of a wave varies as:‌​‍

Accepted Answer

Amplitude² — I ∝ A². ‌​‍Also ∝ f² for fixed medium. Inverse square with distance from point source.

Answer

Frequency only

Answer

Amplitude

Answer

1/Amplitude

Question 4

Environment Protection Act:

Accepted Answer

1986 — 1986 — post-Bhopal.

Answer

1974

Answer

1972

Answer

1980

Question 5

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 6

Which statements about the Vaikom Satyagraha are correct? (I) E.V. Ramaswami Naicker was arrested in connection with it (II) It continued during the 1924 flood (III) Assembly voted 22 for, 21 against on 7 Feb 1925

Accepted Answer

Only I and II — All three facts are historically accurate — Vaikom Satyagraha (1924–25).

Answer

Only I and III

Answer

Only II and III

Answer

I, II and III

Question 7

The largest freshwater lake in Kerala is:‌​‍

Accepted Answer

Sasthamkotta — Sasthamkotta Lake (Kollam) is the largest freshwater lake in Kerala. ‌​‍Vembanad is the longest (but brackish).

Answer

Vembanad

Answer

Ashtamudi

Answer

Periyar Lake

Question 8

When selecting a primary packaging material for a highly hygroscopic drug, which type of container would be most suitable to ensure product stability by minimizing moisture ingress?

Accepted Answer

C. High-density polyethylene (HDPE) container — Highly hygroscopic drugs require packaging with excellent moisture barrier properties. HDPE containers offer superior protection against moisture vapor transmission compared to PVC blister packs or even glass, which while impermeable, requires a good seal. Amber glass primarily protects against light, not moisture ingress as its primary feature.

Answer

A. Type III soda-lime glass bottle

Answer

B. Polyvinyl chloride (PVC) blister pack

Answer

D. Amber glass bottle

Question 9

Army Chief 2024-26:‌​‍

Accepted Answer

Both B and C — Manoj Pande till Jun 2024; Upendra Dwivedi after.‌​‍

Answer

MM Naravane

Answer

Manoj Pande

Answer

Upendra Dwivedi

Question 10

When is International Yoga Day observed?‌​‍

Accepted Answer

21 June — 21 June = International Day of Yoga, declared by UN in 2014 on India's proposal.‌​‍

Answer

5 June

Answer

21 March

Answer

2 October

DCOA Mixed Practice Test #577