DCOA Mixed Practice Test #559

Question 1

Which type of muscle in the human body does not tire easily?‌​‍

Accepted Answer

Cardiac (striated, involuntary, intercalated discs) — Only in heart. ‌​‍Smooth: involuntary, non-striated (walls of organs). Skeletal: voluntary, striated.

Answer

All tire equally

Answer

Smooth

Answer

Skeletal

Question 2

Sucrose (table sugar) has formula:‌​‍

Accepted Answer

C₁₂H₂₂O₁₁ — Sucrose = glucose + fructose − H₂O = C₁₂H₂₂O₁₁ (disaccharide).‌​‍

Answer

CH₃COOH

Answer

C₆H₆

Answer

C₆H₁₂O₆

Question 3

UPI transactions crossed ___ billion/month in 2024:‌​‍

Accepted Answer

10 — Over 10 billion monthly transactions.‌​‍

Answer

15

Answer

5

Answer

8

Question 4

Chandrayaan-3 landed on the Moon on:‌​‍

Accepted Answer

23 August 2023 — Chandrayaan-3's Vikram lander successfully soft-landed on the Moon's south pole region on 23 August 2023.‌​‍

Answer

15 August 2023

Answer

1 September 2023

Answer

14 July 2023

Question 5

Alleppey backwater boat race:‌​‍

Accepted Answer

All famous — Several boat races.‌​‍

Answer

Nehru Trophy

Answer

Champakulam

Answer

Aranmula

Question 6

Kerala State Film Award best director latest:‌​‍

Accepted Answer

Anand Ekarshi — Anand Ekarshi won in recent years.‌​‍

Answer

Lijo Jose Pellissery

Answer

Various

Answer

Blessy

Question 7

The part of the plant that absorbs water from soil is:‌​‍

Accepted Answer

Root — Root hairs absorb water and minerals from the soil through osmosis.‌​‍

Answer

Stem

Answer

Leaf

Answer

Flower

Question 8

Resonance occurs when an external force's frequency matches the object's:

Accepted Answer

Natural frequency — At resonance, energy transfer is maximum — large amplitude oscillations result.

Answer

Amplitude

Answer

Wavelength

Answer

Speed

Question 9

Which is NOT a vector quantity?‌​‍

Accepted Answer

Speed — Speed has only magnitude (scalar); velocity, force, displacement have direction (vectors).‌​‍

Answer

Velocity

Answer

Displacement

Answer

Force

Question 10

Digital Personal Data Protection Act:‌​‍

Accepted Answer

2023 — Passed August 2023. India's data protection law.‌​‍

Answer

Not yet

Answer

2024

Answer

2022

DCOA Mixed Practice Test #559