DCOA Mixed Practice Test #203

Question 1

Malayalam one of 22 scheduled languages:‌​‍

Accepted Answer

Yes — Yes — 8th Schedule.‌​‍

Answer

Classical only

Answer

No

Answer

Associate

Question 2

Sulfonamides exert their antibacterial action by inhibiting a crucial enzyme in bacterial folate synthesis. Which of the following enzymes is directly targeted by sulfonamides?

Accepted Answer

B. Dihydropteroate synthase — Sulfonamides are structural analogs of p-aminobenzoic acid (PABA) and competitively inhibit dihydropteroate synthase, an enzyme vital for the synthesis of dihydrofolic acid in bacteria. This inhibition prevents the production of folic acid, which is essential for bacterial DNA and RNA synthesis, leading to bacteriostatic effects. Dihydrofolate reductase is inhibited by trimethoprim, not sulfonamides.

Answer

A. Dihydrofolate reductase

Answer

C. Thymidylate synthase

Answer

D. DNA gyrase

Question 3

Chemmeen was written by:‌​‍

Accepted Answer

Thakazhi — Thakazhi Sivasankara Pillai wrote Chemmeen (1956).‌​‍

Answer

Basheer

Answer

O.V. Vijayan

Answer

M.T.

Question 4

Gukesh Dommaraju became FIDE World Chess Champion 2024 by defeating:‌​‍

Accepted Answer

Ding Liren — Gukesh beat reigning champion Ding Liren in Singapore (Dec 2024), becoming the youngest World Champion at 18.‌​‍

Answer

Garry Kasparov

Answer

Hikaru Nakamura

Answer

Magnus Carlsen

Question 5

What does a rain gauge measure?‌​‍

Accepted Answer

Rainfall — Rain gauge measures the amount of rainfall in millimetres.‌​‍

Answer

Wind speed

Answer

Humidity

Answer

Temperature

Question 6

Inside a uniform solid sphere, gravitational field varies as:‌​‍

Accepted Answer

r (linearly with distance from centre) — Shell theorem: inside shell, field = 0. In solid sphere g(r) = GM·r/R³.‌​‍

Answer

Constant

Answer

1/r

Answer

1/r²

Question 7

At least he decided to quit the job, ___?

Accepted Answer

didn't he? — Positive past statement → negative past tag: 'didn't he?'

Answer

did he?

Answer

does he?

Answer

doesn't he?

Question 8

Allergen triggers:‌​‍

Accepted Answer

Immune response — Allergic reaction — IgE-mediated.‌​‍

Answer

Endocrine

Answer

Neural

Answer

Digestion

Question 9

Kerala SilverLine consultations:‌​‍

Accepted Answer

NDA opposition — Politically contested project.‌​‍

Answer

Approved

Answer

Ongoing

Answer

Scrapped

Question 10

In action research, which method is most appropriate for collecting qualitative data about students' attitudes toward a new teaching strategy?

Accepted Answer

C. Focus group discussions with students — Focus group discussions are ideal for gathering qualitative data about attitudes and perceptions. Option A (Standardized tests) measure quantitative outcomes, not attitudes. Option B (Observations) provide behavioral data, not direct attitudinal feedback. Option D (Pre- and post-tests) are used for quantitative performance assessment, not qualitative insights.

Answer

A. Standardized achievement tests

Answer

B. Structured classroom observations

Answer

D. Pre- and post-tests comparing scores

DCOA Mixed Practice Test #203