KAS Prelims Mixed Practice Test #643

Question 1

Which statements about the Vaikom Satyagraha are correct? (I) E.V. Ramaswami Naicker was arrested in connection with it (II) It continued during the 1924 flood (III) Assembly voted 22 for, 21 against on 7 Feb 1925

Accepted Answer

Only I and II — All three facts are historically accurate — Vaikom Satyagraha (1924–25).

Answer

Only I and III

Answer

Only II and III

Answer

I, II and III

Question 2

The bicarbonate buffer system (H2CO3/HCO3-) is the most important extracellular buffer in the human body. Its primary role is to maintain the physiological pH of blood within a narrow range. Which of the following statements accurately describes its function?

Accepted Answer

B. It quickly neutralizes excess H+ ions by forming carbonic acid, which can then be converted to CO2 and excreted by the lungs. — The bicarbonate buffer system acts rapidly to buffer pH changes in the extracellular fluid. When excess H+ ions are present, bicarbonate (HCO3-) combines with them to form carbonic acid (H2CO3). Carbonic acid then dissociates into CO2 and water, allowing CO2 to be expelled by the lungs, effectively removing acid from the body.

Answer

A. It primarily buffers intracellular pH changes.

Answer

C. It actively transports H+ ions out of the body via the kidneys.

Answer

D. It directly consumes CO2 to produce bicarbonate ions.

Question 3

Site of Krebs cycle:‌​‍

Accepted Answer

Mitochondrial matrix — Electron transport chain on inner mitochondrial membrane. ‌​‍Glycolysis in cytoplasm.

Answer

Chloroplast

Answer

Ribosome

Answer

Cytoplasm

Question 4

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 5

Kerala's Rajya Sabha seats:‌​‍

Accepted Answer

9 — 9 seats.‌​‍

Answer

14

Answer

6

Answer

12

Question 6

Steppes in:

Accepted Answer

Eurasia — Russia-Central Asia.

Answer

Africa

Answer

Australia

Answer

N America

Question 7

Change to reported speech: He said, 'I have seen a tiger.'

Accepted Answer

He said that he had seen a tiger — Present perfect → past perfect in reported speech (backshift).

Answer

He said that he has seen a tiger

Answer

He said that I have seen a tiger

Answer

He says that he saw a tiger

Question 8

Kerala state fish:‌​‍

Accepted Answer

Karimeen (Pearl spot) — Pearl spot (Etroplus suratensis).‌​‍

Answer

Tilapia

Answer

Sardine

Answer

Mackerel

Question 9

Young's double slit experiment shows:‌​‍

Accepted Answer

Wave nature via interference fringes — Fringe width β = λD/d. ‌​‍Maxima when path difference = nλ. Foundation of wave optics (1801).

Answer

Photoelectric effect

Answer

Polarization only

Answer

Particle nature of light

Question 10

August Declaration by:‌​‍

Accepted Answer

Montagu 1917 — Montagu's statement — eventual self-government.‌​‍

Answer

Cripps

Answer

Irwin

Answer

Wavell

KAS Prelims Mixed Practice Test #643