HSA Mixed Practice Test #11

Question 1

Choose the antonym of 'despair' in: After months of drought the farmers began to despair that they would lose everything.‌​‍

Accepted Answer

hope — Despair (give up hope) ↔ Hope.‌​‍

Answer

desperate

Answer

hurry

Answer

inspire

Question 2

The meaning of the idiom 'cat and dog life' is:‌​‍

Accepted Answer

Constant arguments between couple — Living a cat-and-dog life = quarrelsome domestic life.‌​‍

Answer

Loving pets

Answer

Happy family

Answer

Wild nature

Question 3

An ionic bond is typically formed between:‌​‍

Accepted Answer

A metal and a non-metal — Electron transfer from metal (low EN) to non-metal (high EN) forms ionic bonds.‌​‍

Answer

Two non-metals

Answer

Noble gases

Answer

Two metals

Question 4

Govt Law College TVM:

Accepted Answer

Oldest in Kerala — Oldest.

Answer

Newest

Answer

Private

Answer

Closed

Question 5

National Commission for Backward Classes:‌​‍

Accepted Answer

Both — Constitutional status via 102nd Amendment 2018.‌​‍

Answer

1993

Answer

2000

Answer

2018 (constitutional status)

Question 6

Huygens principle:‌​‍

Accepted Answer

Each point on wavefront acts as secondary source — Explains reflection, refraction, diffraction wave-theoretically. ‌​‍Wavefront envelope gives new wavefront.

Answer

No interference

Answer

No diffraction

Answer

Light is particle

Question 7

International Date Line roughly:

Accepted Answer

180° meridian — Near 180° longitude.

Answer

0°

Answer

90°

Answer

45°

Question 8

The law that relates force between two charges is:‌​‍

Accepted Answer

Coulomb's law — F = k q₁q₂/r²; force between point charges.‌​‍

Answer

Newton's law

Answer

Ohm's law

Answer

Faraday's law

Question 9

CNG (Compressed Natural Gas) is cleaner because:‌​‍

Accepted Answer

Less SPM, SO₂ and CO than petrol/diesel; mostly methane — Delhi buses converted post-Supreme Court 1998 order. ‌​‍Lower particulates; still has CO₂ and NOx.

Answer

Heavier

Answer

Liquid

Answer

No emissions

Question 10

LED works on principle of:‌​‍

Accepted Answer

Electroluminescence — photon emission on recombination — Direct bandgap semiconductors (GaAs, GaN). ‌​‍Energy of photon ≈ bandgap. Nobel 2014 for blue LED.

Answer

Thermionic emission

Answer

Diffraction

Answer

Photoelectric effect

HSA Mixed Practice Test #11