VFA Mixed Practice Test #642

Question 1

Conservation of mechanical energy applies when:‌​‍

Accepted Answer

Only conservative forces do work — KE + PE = constant when non-conservative forces (friction, air drag) do no work.‌​‍

Answer

Collisions

Answer

Always

Answer

Friction present

Question 2

COVID Vaccine drive started in India on:‌​‍

Accepted Answer

16 January 2021 — PM Modi launched India's COVID-19 vaccination programme on 16 January 2021.‌​‍

Answer

17 January 2021

Answer

15 January 2021

Answer

14 January 2021

Question 3

Study of body structure:‌​‍

Accepted Answer

Anatomy — Anatomy.‌​‍

Answer

Cytology

Answer

Physiology

Answer

Histology

Question 4

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 5

Incomplete dominance is shown in:‌​‍

Accepted Answer

Mirabilis jalapa (4 o'clock) — pink F1 — Red × white → pink. ‌​‍F2: 1:2:1 (red:pink:white). Co-dominance: ABO blood group (both A and B expressed).

Answer

Mendel's pea

Answer

Human blood

Answer

Drosophila eye

Question 6

Which type of muscle tissue is characterized by involuntary control, striations, and the presence of intercalated discs?

Accepted Answer

C. Cardiac muscle — Cardiac muscle tissue, found exclusively in the heart, exhibits all three characteristics: involuntary control (not consciously controlled), striations (due to organized contractile proteins), and intercalated discs (specialized junctions that facilitate rapid electrical communication between cells). Skeletal muscle is voluntary and striated, while smooth muscle is involuntary and non-striated. Tendon tissue connects muscles to bones.

Answer

A. Skeletal muscle

Answer

B. Smooth muscle

Answer

D. Tendon tissue

Question 7

Which Malayalam poet was honored by the British prince in 1922?

Accepted Answer

Kumaranasan — Kumaranasan was honored with 'Mahakavi' title by Prince of Wales in 1922.

Answer

G. Sankara Kurup

Answer

Vallathol Narayana Menon

Answer

Changampuzha Krishnapillai

Question 8

Who was the Brand Ambassador of 'Make in Kerala' programme?

Accepted Answer

Mohanlal — Mohanlal was Brand Ambassador for 'Make in Kerala'.

Answer

Mammootty

Answer

Suresh Gopi

Answer

Dileep

Question 9

Bryophytes are called amphibians of plants because:‌​‍

Accepted Answer

Require water for fertilisation (sperm swim) — Mosses, liverworts. Gametophyte dominant. Lack vascular tissue.‌​‍

Answer

Breathe with gills

Answer

Live in water

Answer

Have lungs

Question 10

Vulcanisation of rubber:‌​‍

Accepted Answer

Heating natural rubber with sulfur — improves strength and elasticity — Goodyear (1839). ‌​‍Sulfur cross-links polyisoprene chains. Car tyres, conveyor belts.

Answer

Heating only

Answer

Cooling

Answer

Boiling

VFA Mixed Practice Test #642