DCOA Mixed Practice Test #615

Question 1

K.P. Appan:‌​‍

Accepted Answer

Critic — Literary critic.‌​‍

Answer

Politician

Answer

Actor

Answer

Novelist

Question 2

Valence shell electron pair repulsion (VSEPR) predicts shape of NH₃:‌​‍

Accepted Answer

Trigonal pyramidal (with lone pair) — 3 bond pairs + 1 lone pair on N; H-N-H angle ~107°. ‌​‍Tetrahedral electron geometry; pyramidal molecular.

Answer

Linear

Answer

Trigonal planar

Answer

Tetrahedral

Question 3

Vir Bhumi:‌​‍

Accepted Answer

Rajiv — Rajiv Gandhi.‌​‍

Answer

Gandhi

Answer

Indira

Answer

Jawaharlal Nehru

Question 4

The primary functional group responsible for the proton pump inhibitory activity of omeprazole and related drugs is:

Accepted Answer

D. Sulfoxide group — Omeprazole is a prodrug, and the sulfoxide group is crucial for its activation. In acidic conditions, the sulfoxide is converted to a sulfenamide, which then covalently binds to the H+/K+-ATPase pump. While pyridine and benzimidazole rings are part of the overall structure, the sulfoxide is key to its mechanism.

Answer

A. Sulfonyl group

Answer

B. Pyridine ring

Answer

C. Benzimidazole ring

Question 5

Kerala New Year:

Accepted Answer

Vishu — Vishu — Malayalam New Year (Medam 1).

Answer

Onam

Answer

Kerala Piravi

Answer

Pongal

Question 6

Velu Thampi Dalawa, who led an anti-British revolt in 1809, was the Dalawa (minister) of:

Accepted Answer

Travancore — Velu Thampi Dalawa, Dalawa of Travancore, issued the famous Kundara Proclamation (1809) against the British.

Answer

Kochi

Answer

Malabar

Answer

Kolathunadu

Question 7

Kaikottikkali:‌​‍

Accepted Answer

Dance by women around lamp — Traditional women's dance during Onam.‌​‍

Answer

Men only

Answer

Couples

Answer

Solo

Question 8

The 'Thiruvithamkoor Ezhava Memoir' (1904) was a significant document in Kerala’s socio-religious reform movements. Which reformer is primarily credited with its authorship and advocacy for Ezhava community upliftment?

Accepted Answer

D. Dr. Palpu — Dr. Palpu, an Ezhava reformer, authored the 'Thiruvithamkoor Ezhava Memoir' to highlight the grievances of the Ezhava community and demand social justice. Mannathu Padmanabhan led the Nair Service Society, C. Kesavan was a later political leader, and Kumaran Asan was a poet-reformer associated with caste reforms but not the memoir's author.

Answer

A. Mannathu Padmanabhan

Answer

B. C. Kesavan

Answer

C. Kumaran Asan

Question 9

The gap between two neurons across which signals pass is called:

Accepted Answer

Synapse — At the synapse, neurotransmitters cross the cleft to transmit signals.

Answer

Axon hillock

Answer

Dendrite

Answer

Node of Ranvier

Question 10

Photoelectric effect depends on:‌​‍

Accepted Answer

Frequency (threshold); intensity affects current — Below threshold frequency, no emission. Explained by Einstein (Nobel 1921).‌​‍

Answer

Only temperature

Answer

Intensity only

Answer

Colour only

DCOA Mixed Practice Test #615