DCOA Mixed Practice Test #271

Question 1

Decomposition releases inorganic nutrients via:‌​‍

Accepted Answer

Fragmentation, leaching, catabolism, humification, mineralization — Detritivores + decomposers (bacteria, fungi). ‌​‍Temperature, moisture, O₂ affect rate.

Answer

Absorption

Answer

Transpiration

Answer

Photosynthesis

Question 2

Light from the Sun takes approximately how long to reach Earth?‌​‍

Accepted Answer

8 minutes 20 seconds — Sun–Earth distance = 1 AU = ~150 million km; light at 3×10⁵ km/s → ~499 s ≈ 8 min 20 s.‌​‍

Answer

2 minutes

Answer

1 hour

Answer

20 minutes

Question 3

The Punnapra-Vayalar uprising was against:‌​‍

Accepted Answer

Dewan C.P. Ramaswami Iyer — 1946 communist-led workers' uprising against Travancore Dewan Sir C.P. ‌​‍Ramaswami Iyer.

Answer

British

Answer

Zamorin

Answer

Dutch

Question 4

Under the Wildlife Protection Act, 1972, which authority is empowered to declare any area as a 'Community Reserve' for the protection of wildlife and its habitat?

Accepted Answer

C. The Central Government in consultation with the concerned State Government — The Central Government, in consultation with the concerned State Government, is empowered under Section 33 of the Wildlife Protection Act, 1972 to declare any area as a 'Community Reserve' for the protection of wildlife and its habitat. This provision aims to involve local communities in conservation efforts while ensuring legal protection to such areas. The State Government alone cannot declare such reserves without central approval, and NBWL or WII do not have this authority.

Answer

A. The State Government

Answer

B. The National Board for Wildlife (NBWL)

Answer

D. The Wildlife Institute of India

Question 5

What was the original name of Swami Dayananda Saraswati?

Accepted Answer

Mulshankar — Born Mulshankar Tiwari (1824).

Answer

Keshab Chandra Sen

Answer

Narendranath Dutta

Answer

Mohan Roy

Question 6

Kerala Public Service Commission:‌​‍

Accepted Answer

Conducts state govt job exams — State PSC.‌​‍

Answer

None

Answer

Central

Answer

Private

Question 7

The primary mechanism by which non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen cause gastric ulceration is:

Accepted Answer

B. Inhibition of cyclooxygenase-1 (COX-1) in the gastric mucosa. — NSAIDs inhibit cyclooxygenase (COX) enzymes. Inhibition of COX-1 in the gastric mucosa reduces the production of protective prostaglandins, which are essential for maintaining gastric blood flow, mucus secretion, and bicarbonate production, thereby leading to mucosal damage and ulceration.

Answer

A. Direct corrosive action on the gastric mucosa.

Answer

C. Increased gastric acid secretion.

Answer

D. Stimulation of histamine release in the stomach.

Question 8

Who wrote 'Unniyadi Charitham'?‌​‍

Accepted Answer

Appan Thampuran — Appan Thampuran's historical novel is a landmark of early Malayalam prose.‌​‍

Answer

Rayaramilla

Answer

Damodara Chakkyar

Answer

Kerala Varma

Question 9

Habitat destruction is the primary cause of:‌​‍

Accepted Answer

Biodiversity loss — Evil quartet: habitat loss and fragmentation, over-exploitation, alien species invasion, co-extinctions.‌​‍

Answer

Ozone depletion

Answer

Global warming only

Answer

Pollution

Question 10

When was the Press Council of India established?‌​‍

Accepted Answer

1965 (statutory body from 1978 Act) — Statutory, not regulatory. ‌​‍Adjudicates complaints against/by press. Chairman traditionally retired SC judge.

Answer

2000

Answer

1947

Answer

1991

DCOA Mixed Practice Test #271