DCOA Mixed Practice Test #30

Question 1

Genotype vs Phenotype:

Accepted Answer

Gene vs appearance — Genetic vs expressed traits.

Answer

Same

Answer

Opposite

Answer

Unrelated

Question 2

Kerala's first woman district collector:

Accepted Answer

Anna Malhotra — Anna Malhotra — IAS, first woman collector.

Answer

Renuka Sudhakar

Answer

Padmaja Venugopal

Answer

Sheela Thomas

Question 3

KTDC:‌​‍

Accepted Answer

Kerala Tourism Development Corporation — State agency.‌​‍

Answer

Co-op

Answer

Private

Answer

Central

Question 4

If 4y − 7 = 3y + 5, then y =

Accepted Answer

12 — y = 12 (move terms: y = 5 + 7 = 12).

Answer

8

Answer

10

Answer

15

Question 5

World War I began in:‌​‍

Accepted Answer

1914 — WWI began on 28 July 1914 (Austria-Hungary declared war on Serbia).‌​‍

Answer

1915

Answer

1917

Answer

1919

Question 6

The integration of princely states into the Indian Union was a complex process in post-independence India. In the context of the Travancore-Cochin merger, which of the following best describes the primary political impetus for their unification?

Accepted Answer

C. The culmination of popular agitation for responsible government within both states, coupled with the Indian Union's firm policy on princely state integration. — The primary impetus for the Travancore-Cochin merger was the strong demand for responsible government from popular movements like the State Congress in both states, coupled with the Indian Union's resolute policy of integrating princely states into the national framework. Options A, B, and D represent less significant or inaccurate motivations; the British administration did not directly order such mergers post-independence, and economic competition or military alliances were not the driving forces for this specific unification.

Answer

A. To create a stronger economic bloc to compete with neighboring Madras Presidency.

Answer

B. The direct order from the departing British colonial administration to form larger administrative units.

Answer

D. The strategic military alliance formed between Travancore and Cochin to counter potential external threats.

Question 7

NAM (Non-Aligned Movement) was founded at Belgrade in:‌​‍

Accepted Answer

1961 — First NAM Summit at Belgrade (Sep 1961). ‌​‍Founders: Jawaharlal Nehru, Tito, Nasser, Sukarno, Nkrumah.

Answer

1955

Answer

1971

Answer

1991

Question 8

Inductive effect (–I):

Accepted Answer

Withdraws electrons through sigma bonds — Electronegative groups (–NO₂, –CN, –Cl) pull e⁻ density. +I: alkyl groups donate.

Answer

Donates electrons

Answer

Only π

Answer

Hyperconjugation

Question 9

Speed of sound in air at 20°C is approximately:‌​‍

Accepted Answer

343 m/s — v = √(γP/ρ) ≈ 331 + 0.6T (°C). In water ~1482 m/s; in steel ~5960 m/s.‌​‍

Answer

330 m/s

Answer

1500 m/s

Answer

450 m/s

Question 10

Ferdinand Magellan led first circumnavigation:‌​‍

Accepted Answer

1519-1522 — Magellan's expedition (1519-1522) — first to circumnavigate globe. ‌​‍Magellan himself killed in Philippines 1521; Juan Sebastián Elcano completed voyage.

Answer

1498-1502

Answer

1498-1500

Answer

1530-1532

DCOA Mixed Practice Test #30