DCOA Mixed Practice Test #18

Question 1

In Bohr's model of the atom, electrons revolve in:‌​‍

Accepted Answer

Fixed circular orbits with quantised energy — Bohr (1913) postulated quantised, stable circular orbits to explain hydrogen's spectrum.‌​‍

Answer

Elliptical orbits only

Answer

Cloud-like regions

Answer

Random paths

Question 2

An omnivore eats:‌​‍

Accepted Answer

Both plants and meat — Omnivore = eats both plants and animals. Humans are omnivores.‌​‍

Answer

Plants only

Answer

Meat only

Answer

Neither

Question 3

Cancer cells differ from normal because:‌​‍

Accepted Answer

Uncontrolled division (lack contact inhibition) — Metastasis — spread to distant sites. ‌​‍Proto-oncogenes (normal) mutate to oncogenes. Tumour suppressor genes (p53, Rb).

Answer

Faster death

Answer

No difference

Answer

Smaller

Question 4

In Kerala, 'Vayana Dinam' (Reading Day) is observed on June 19th. Which prominent figure's death anniversary is commemorated on this day, emphasizing the importance of reading and literacy?

Accepted Answer

B. P.N. Panicker — Vayana Dinam, or Reading Day, in Kerala is observed on June 19th, marking the death anniversary of P.N. Panicker. He is widely known as the 'Father of the Library Movement' in Kerala, and his efforts significantly contributed to promoting literacy and reading habits across the state. The other figures are prominent in Kerala but not directly associated with Reading Day in this context.

Answer

A. E.M.S. Namboodiripad

Answer

C. A.K. Gopalan

Answer

D. Kumaran Asan

Question 5

Infrasound used by:

Accepted Answer

Elephants — Below 20 Hz. Long distance communication.

Answer

Bats

Answer

Dolphins

Answer

Dogs

Question 6

Dr. Kalam is popularly known as the:

Accepted Answer

Both Missile Man and People's President — Kalam is known as the 'Missile Man' (for SLV-3, Agni, Prithvi) and 'People's President'.

Answer

Iron Man of India

Answer

Missile Man of India

Answer

People's President

Question 7

Nobel Peace Prize awarded at:‌​‍

Accepted Answer

Oslo — Peace Prize at Oslo, Norway. All others at Stockholm, Sweden.‌​‍

Answer

Stockholm

Answer

Geneva

Answer

The Hague

Question 8

Parambikulam Tiger Reserve is in:‌​‍

Accepted Answer

Palakkad — Parambikulam Tiger Reserve is in Palakkad district, known for teak plantations and wildlife.‌​‍

Answer

Idukki

Answer

Thrissur

Answer

Wayanad

Question 9

2G Spectrum case involved allegations against:‌​‍

Accepted Answer

A. Raja (Telecom Minister) — 2G Spectrum allocation scandal (2008). ‌​‍A. Raja (DMK, Telecom Minister) arrested. ‌​‍CAG estimated ₹1.76 lakh crore 'presumptive loss'. SC cancelled 122 licences.

Answer

Suresh Kalmadi

Answer

Manmohan Singh

Answer

Sheila Dikshit

Question 10

Anti-incumbency broken in Kerala:‌​‍

Accepted Answer

2021 LDF — 2021 — LDF broke alternating.‌​‍

Answer

1957

Answer

1977

Answer

Never

DCOA Mixed Practice Test #18