DCOA Mixed Practice Test #222

Question 1

FIFA 2026 will be hosted by:‌​‍

Accepted Answer

USA/Canada/Mexico — First tri-hosted World Cup.‌​‍

Answer

Qatar

Answer

India

Answer

Australia

Question 2

The Olympic Games are held every:‌​‍

Accepted Answer

4 years — Summer Olympics are held every 4 years. ‌​‍Winter Olympics also every 4 years (offset by 2).

Answer

2 years

Answer

3 years

Answer

5 years

Question 3

Which of the following is a key component of the body’s first-line defense against infections?

Accepted Answer

B. Phagocytosis by neutrophils and macrophages — Phagocytosis by neutrophils and macrophages is a primary component of innate immunity (first-line defense). Antibodies and memory T-cells are part of adaptive immunity, while the complement system is a biochemical defense.

Answer

A. Antibodies produced by plasma cells

Answer

C. Complement system activation

Answer

D. Memory T-cell response

Question 4

The Famine of 1943 (Bengal Famine) killed approximately:‌​‍

Accepted Answer

30 lakh — The Bengal Famine (1943) killed ~30 lakh (3 million) people. ‌​‍It was partly caused by WWII supply disruptions and British policies.

Answer

5 lakh

Answer

15 lakh

Answer

50 lakh

Question 5

The longest river in Kerala is:‌​‍

Accepted Answer

Periyar — Periyar (244 km) is the longest river in Kerala.‌​‍

Answer

Bharathapuzha

Answer

Pamba

Answer

Chaliyar

Question 6

Which of the following are the components of prejudice?‌​‍

Accepted Answer

Cognitive (stereotype) + Affective (prejudice) + Behavioral (discrimination) — Stereotype = belief. ‌​‍Prejudice = attitude. Discrimination = behavior. ‌​‍Contact hypothesis reduces prejudice (Allport).

Answer

None

Answer

Only action

Answer

Only belief

Question 7

Which statements about temperature inversion are correct? ‌​‍(1) Can trap pollutants near the ground (2) Typically occurs on clear, calm nights (3) Results in cooler temperatures at higher altitudes than lower

Accepted Answer

1 and 2 only — Temperature inversion traps pollutants and occurs on clear calm nights. ‌​‍Its definition is WARMER air above cooler — so statement 3 is backwards.

Answer

2 and 3 only

Answer

1 and 3 only

Answer

All three

Question 8

Angiosperms:‌​‍

Accepted Answer

Flowering plants — Produce flowers and fruits.‌​‍

Answer

Naked seeds

Answer

Non-flowering

Answer

Spores

Question 9

The enzyme that helps in protein digestion in humans:‌​‍

Accepted Answer

Trypsin — Trypsin (pancreatic enzyme) breaks proteins into peptides.‌​‍

Answer

Lipase

Answer

Maltase

Answer

Sucrase

Question 10

Who led the 1921 Malabar Rebellion from the Eranad-Valluvanad area?‌​‍

Accepted Answer

Ali Musliyar and Variyankunnath Kunhahammad Haji — The 1921 rebellion was led by Ali Musliyar and Variyankunnath Kunhahammad Haji.‌​‍

Answer

Muhammad Abdurahiman

Answer

P. Krishna Pillai

Answer

Moyyarath Sankaran

DCOA Mixed Practice Test #222