VFA Mixed Practice Test #309

Question 1

A concave lens has power:

Accepted Answer

Negative — Diverging (concave) lenses have negative power; converging (convex) have positive.

Answer

Positive

Answer

Zero

Answer

Depends on size only

Question 2

Malabar was part of which British presidency?‌​‍

Accepted Answer

Madras — Malabar was part of Madras Presidency under direct British rule.‌​‍

Answer

Bombay

Answer

Bengal

Answer

Central Provinces

Question 3

The functional group −COOH is called:

Accepted Answer

Carboxyl — −COOH is the carboxyl group, characteristic of carboxylic acids (e.g., acetic acid).

Answer

Hydroxyl

Answer

Aldehyde

Answer

Ketone

Question 4

Kerala's first woman chief secretary:‌​‍

Accepted Answer

Padma Ramachandran — Padma Ramachandran.‌​‍

Answer

Both A and B

Answer

Neela Gangadharan

Answer

Anita Bhatia

Question 5

Which district of Kerala has the highest population density?‌​‍

Accepted Answer

Alappuzha — Alappuzha has the highest population density in Kerala at about 1,501 per sq km.‌​‍

Answer

Thrissur

Answer

Thiruvananthapuram

Answer

Ernakulam

Question 6

The Syrian Catholic Church at Kanjur is associated in history with:‌​‍

Accepted Answer

Sakthan Thampuran — The Syrian Catholic Church at Kanjur is historically associated with Sakthan Thampuran's era of Kochi.‌​‍

Answer

Marthanda Varma

Answer

Sri Vallabha Kotha

Answer

Sthanu Ravi

Question 7

Which of the following vitamins is a cofactor for the carboxylation reactions involved in the synthesis of clotting factors like prothrombin?

Accepted Answer

C. Vitamin K — Vitamin K is essential for the carboxylation of glutamic acid residues in clotting factors, enabling them to bind calcium and function in blood coagulation. Deficiency leads to impaired clotting. The other vitamins listed do not play a role in this process.

Answer

A. Vitamin A

Answer

B. Vitamin D

Answer

D. Vitamin E

Question 8

Sri Lanka's Tamil conflict (1983-2009) ended with:‌​‍

Accepted Answer

Military defeat of LTTE (May 2009) — 26-year civil war ended when Sri Lankan military defeated LTTE. ‌​‍Prabhakaran killed May 2009. ~100,000 total deaths. ‌​‍Accountability for human rights violations remains contested.

Answer

Ceasefire

Answer

Autonomy

Answer

Independence

Question 9

Kerala's first Malayalam newspaper:‌​‍

Accepted Answer

Rajyasamacharam (1847, by Hermann Gundert) — Talasseri. ‌​‍Gundert (German missionary) also compiled Malayalam-English dictionary (1872). Paschimodayam was second.

Answer

Kerala Kaumudi

Answer

Mathrubhumi

Answer

Manorama

Question 10

Bowen's Reaction Series describes:

Accepted Answer

Order of mineral crystallisation from magma — Discontinuous (olivine → pyroxene → amphibole → biotite) and continuous (Ca-plagioclase → Na-plagioclase) branches. Norman L. Bowen.

Answer

Volcanic eruption

Answer

Tectonics

Answer

Weathering

VFA Mixed Practice Test #309