DCOA Mixed Practice Test #728

Question 1

The hottest planet in the solar system is:‌​‍

Accepted Answer

Venus — Venus is the hottest planet due to its thick CO₂ atmosphere creating an extreme greenhouse effect (~460°C surface temperature). ‌​‍Mercury is closer to the Sun but has no atmosphere.

Answer

Mercury

Answer

Mars

Answer

Jupiter

Question 2

The largest artery in the human body is:‌​‍

Accepted Answer

Aorta — The aorta carries oxygenated blood from the left ventricle to the body.‌​‍

Answer

Pulmonary artery

Answer

Carotid artery

Answer

Vena cava

Question 3

Thrissur Pooram held at:‌​‍

Accepted Answer

All of these (as festival site) — Takes place at Vadakkunnathan; organized by Paramekkavu and Thiruvambady devaswoms.‌​‍

Answer

Thiruvambady

Answer

Paramekkavu

Answer

Vadakkunnathan Temple

Question 4

Which is the highest peak of the Himalayas in India?‌​‍

Accepted Answer

Kanchenjunga — Kanchenjunga (8,586 m) in Sikkim is the highest in India (Everest is in Nepal; K2 in POK).‌​‍

Answer

Nanda Devi

Answer

K2 (Godwin Austen)

Answer

Everest

Question 5

Which part of the EM spectrum has the longest wavelength?‌​‍

Accepted Answer

Radio waves — Radio waves (km to mm) have longest wavelengths in the EM spectrum.‌​‍

Answer

Gamma

Answer

X-ray

Answer

Visible

Question 6

As per national guidelines, exclusive breastfeeding is recommended for infants for the first six months of life. What is the primary nutritional benefit of this practice?

Accepted Answer

A. Provides all necessary nutrients and antibodies for the infant's growth and immunity — Exclusive breastfeeding provides all the necessary nutrients, hydration, and protective antibodies for an infant's optimal growth, development, and immunity during the first six months of life. It is a complete food source for this period. Early introduction of solids is generally discouraged, and while breast milk contains iron, it doesn't guarantee sufficient stores for the entire first year without complementary feeding. Breast milk is highly nutritious, not just hydrating.

Answer

B. Helps in the early introduction of solid foods to prevent allergies

Answer

C. Ensures adequate iron stores for the first year of life

Answer

D. Primarily serves to hydrate the infant without providing significant nutrition

Question 7

Who wrote the acclaimed novel 'Things Fall Apart'?‌​‍

Accepted Answer

Achebe — Chinua Achebe (Nigeria, 1958). ‌​‍Igbo society and colonialism. Classic African novel.

Answer

Soyinka

Answer

Ngugi

Answer

Gordimer

Question 8

Vitamin E is also called:‌​‍

Accepted Answer

Tocopherol — Tocopherol. Deficiency = sterility.‌​‍

Answer

Retinol

Answer

Calciferol

Answer

Thiamine

Question 9

Ustad Ahmad Lahauri is the principal designer of which famous building?

Accepted Answer

Taj Mahal — Ustad Ahmad Lahauri — chief architect of Taj Mahal under Shah Jahan.

Answer

Qutub Minar

Answer

Red Fort

Answer

Charminar

Question 10

Name the pigment which helps animals to see in dim light:‌​‍

Accepted Answer

Rhodopsin — Rhodopsin (visual purple) in rod cells enables low-light vision.‌​‍

Answer

Chromatin

Answer

Photopsin

Answer

Haemoglobin

DCOA Mixed Practice Test #728