DCOA Mixed Practice Test #324

Question 1

'The Waste Land' (1922) by:‌​‍

Accepted Answer

T. S. Eliot — Modernist masterpiece. ‌​‍Fragmented, allusive. 'April is the cruellest month.' Nobel 1948.

Answer

Yeats

Answer

Pound

Answer

Frost

Question 2

RBI Digital Rupee transactions:‌​‍

Accepted Answer

Growing pilot — Pilot since Dec 2022.‌​‍

Answer

Cancelled

Answer

Main

Answer

Failed

Question 3

Nitrogen-fixing bacteria living in root tumours of pea plants are called:‌​‍

Accepted Answer

Rhizobium — Rhizobium forms symbiotic nodules with legumes.‌​‍

Answer

Rhizome

Answer

E. coli

Answer

Streptococcus

Question 4

An analogous structure (e.g., insect wing vs bird wing) indicates:‌​‍

Accepted Answer

Convergent evolution (similar function, different origin) — Analogous organs evolved independently but share function due to similar selection pressures.‌​‍

Answer

Common ancestry

Answer

No evolution

Answer

Nothing

Question 5

Willingdon Island is in:‌​‍

Accepted Answer

Kochi — Man-made island in Kochi, built by Robert Bristow for port development.‌​‍

Answer

Mumbai

Answer

Chennai

Answer

Kolkata

Question 6

Which of the following ions is essential for the activation of the enzyme carbonic anhydrase?

Accepted Answer

B. Zinc ion (Zn²⁺) — Carbonic anhydrase requires zinc ions (Zn²⁺) at its active site for catalytic activity, which facilitates the conversion of carbon dioxide and water to carbonic acid. Magnesium, calcium, and iron ions are not involved in this process.

Answer

A. Magnesium ion (Mg²⁺)

Answer

C. Calcium ion (Ca²⁺)

Answer

D. Iron ion (Fe²⁺)

Question 7

Dr. Palpu submitted the Ezhava Memorial in:‌​‍

Accepted Answer

1896 — The Ezhava Memorial (1896) was a petition to the Travancore ruler demanding the right of Ezhavas to enter government service.‌​‍

Answer

1891

Answer

1903

Answer

1910

Question 8

Vaikom Satyagraha:‌​‍

Accepted Answer

1924-25 — 1924-25 for road access near temple.‌​‍

Answer

1920-21

Answer

1930-31

Answer

1936

Question 9

SI unit of length is:‌​‍

Accepted Answer

Metre — Metre (m) is the SI unit of length.‌​‍

Answer

Centimetre

Answer

Kilometre

Answer

Mile

Question 10

The speed of light is:‌​‍

Accepted Answer

3 × 10⁸ m/s — Speed of light in vacuum ≈ 3 × 10⁸ m/s.‌​‍

Answer

3 × 10⁶ m/s

Answer

3 × 10¹⁰ m/s

Answer

3 × 10⁴ m/s

DCOA Mixed Practice Test #324