HSA Mixed Practice Test #899

Question 1

Portuguese arrived Kerala:

Accepted Answer

1498 — Vasco da Gama 1498 Kappad.

Answer

1500

Answer

1510

Answer

1600

Question 2

'She has a pet dog, ___?' (Question tag)‌​‍

Accepted Answer

doesn't she — 'Has' here means possess → main verb → tag uses do/does/did.‌​‍

Answer

hasn't she

Answer

isn't she

Answer

haven't she

Question 3

Lowering of voting age in India was done under ___ Amendment Act.‌​‍

Accepted Answer

61st — 61st Amendment (1989) lowered voting age from 21 to 18.‌​‍

Answer

93rd

Answer

51st

Answer

73rd

Question 4

Nylon 6,6 is a synthetic polymer renowned for its high tensile strength, elasticity, and abrasion resistance, making it suitable for various industrial applications. Considering its chemical structure and synthesis, which of the following statements accurately describes the formation and a key application of Nylon 6,6?

Accepted Answer

B. It is formed by the condensation polymerization of hexamethylenediamine and adipic acid, and is primarily used in manufacturing ropes and fabrics. — Nylon 6,6 is a polyamide synthesized through condensation polymerization, involving the reaction between hexamethylenediamine and adipic acid, where water molecules are eliminated. Its robust mechanical properties, including high tensile strength and abrasion resistance, make it ideal for industrial applications such as ropes, textiles, and engineering plastics. Option A describes Nylon 6 and misidentifies its application; Option C describes polyethylene/polypropylene and misidentifies the application; Option D describes Polyethylene Terephthalate (PET).

Answer

A. It is formed by the addition polymerization of caprolactam and is primarily used in manufacturing electrical insulators.

Answer

C. It is formed by the addition polymerization of ethene and propene monomers, and is primarily used in non-stick coatings.

Answer

D. It is formed by the condensation polymerization of terephthalic acid and ethylene glycol, and is primarily used in making high-strength plastic bottles.

Question 5

Select the correctly spelt word:‌​‍

Accepted Answer

Champagne — Champagne (sparkling wine, French origin).‌​‍

Answer

Champaene

Answer

Shampaene

Answer

Shampagne

Question 6

Alpine forest above:‌​‍

Accepted Answer

3,600m — Above timberline.‌​‍

Answer

5000m

Answer

1000m

Answer

2000m

Question 7

In Donne's 'A Valediction: Forbidding Mourning', the spiritual bond between lovers is compared to:‌​‍

Accepted Answer

A twin-compass where one leg moves and the other stays rooted — John Donne's metaphysical conceit of stiff twin compasses.‌​‍

Answer

A pendulum swinging in harmony

Answer

A compass that always points north

Answer

A pair of twin flames

Question 8

The Emergency of 1975 was declared under Article:‌​‍

Accepted Answer

352 — National Emergency declared on 25 June 1975 under Article 352.‌​‍

Answer

356

Answer

360

Answer

370

Question 9

The loudness of sound depends on:‌​‍

Accepted Answer

Amplitude — Larger amplitude = louder sound; higher frequency = higher pitch.‌​‍

Answer

Medium only

Answer

Speed

Answer

Frequency only

Question 10

The expression 'at sixes and sevens' means:

Accepted Answer

a state of confusion — Idiom meaning disorder or confusion.

Answer

a state of sorrow

Answer

a state of excitement

Answer

a state of anxiety

HSA Mixed Practice Test #899