DCOA Mixed Practice Test #471

Question 1

How many seats in Rajya Sabha are allocated to Kerala?‌​‍

Accepted Answer

9 — Kerala has 9 seats in the Rajya Sabha.‌​‍

Answer

14

Answer

12

Answer

20

Question 2

An example of a vestigial organ in humans is:

Accepted Answer

Appendix — Vermiform appendix is a vestigial organ — evolutionary remnant of caecum.

Answer

Heart

Answer

Liver

Answer

Brain

Question 3

Electrolysis of NaCl (brine) industrially gives:‌​‍

Accepted Answer

NaOH, H₂, Cl₂ (Chlor-alkali process) — Mercury cell or membrane cell. ‌​‍Key industrial process. Molten NaCl (Down's process) gives Na metal.

Answer

Only H₂

Answer

Na and Cl₂

Answer

Na metal

Question 4

A journal named 'Deepika' was started by:‌​‍

Accepted Answer

Fr. Heras — Nasrani Deepika (1887, oldest Malayalam newspaper) was started by Catholic priests at Mannanam — founder credited variously, including Fr. ‌​‍Nidhirickal Mani Kathanar.

Answer

Vakkom Maulavi

Answer

Chattampi Swamikal

Answer

Mother Teresa

Question 5

Energy production in the Sun and other stars is by:‌​‍

Accepted Answer

Nuclear Fusion — Hydrogen nuclei fuse to form helium, releasing energy.‌​‍

Answer

Beta decay

Answer

Nuclear Fission

Answer

Alpha decay

Question 6

Cardiac glycosides like Digoxin are known for their positive inotropic effect, which increases the force of myocardial contraction. This effect primarily involves:

Accepted Answer

B. Inhibiting the Na+/K+-ATPase pump. — Cardiac glycosides inhibit the Na+/K+-ATPase pump in cardiac muscle cells, leading to increased intracellular sodium. This in turn reduces the activity of the Na+/Ca2+ exchanger, resulting in increased intracellular calcium, which enhances myocardial contractility.

Answer

A. Blocking beta-adrenergic receptors.

Answer

C. Increasing cyclic AMP levels.

Answer

D. Dilating peripheral blood vessels.

Question 7

Most populous country (2024):‌​‍

Accepted Answer

India — India surpassed China in 2023.‌​‍

Answer

China

Answer

USA

Answer

Indonesia

Question 8

Technopark TVM:‌​‍

Accepted Answer

India's first IT park — First IT Park in India (1990).‌​‍

Answer

Private

Answer

Largest

Answer

Third

Question 9

The Sufi Chishti saint whose dargah at Ajmer is a major pilgrimage site was:‌​‍

Accepted Answer

Moinuddin Chishti — Khwaja Moinuddin Chishti (d. ‌​‍1236) founded Chishti silsila in India. Ajmer Sharif Dargah — visited by Akbar multiple times; Mughal patronage.

Answer

Nizamuddin Auliya

Answer

Salim Chishti

Answer

Baba Farid

Question 10

Hypermetropia:

Accepted Answer

Far-sighted — Close objects blurred.

Answer

Near-sighted

Answer

None

Answer

Both

DCOA Mixed Practice Test #471