HSA Mixed Practice Test #375

Question 1

Silver chloride decomposes in sunlight producing:‌​‍

Accepted Answer

Silver and chlorine gas — 2AgCl → 2Ag + Cl₂ on exposure to light; basis of traditional photography.‌​‍

Answer

Only silver

Answer

Only chlorine

Answer

Silver oxide

Question 2

The three dimensions of equality discussed in modern democracy are:‌​‍

Accepted Answer

Political, social, economic — Democratic equality has political (vote/contest), social (non-discrimination), and economic (equal work/pay) dimensions.‌​‍

Answer

Individual, group, state

Answer

National, regional, local

Answer

Moral, spiritual, physical

Question 3

Political Party internal democracy:‌​‍

Accepted Answer

No law — No enforceable law; ECI guidelines.‌​‍

Answer

Voluntary

Answer

Law specifies

Answer

Mandatory

Question 4

A newborn infant receives antibodies from their mother through the placenta and later through breast milk. This type of immunity provides immediate, but temporary, protection against certain pathogens, without the infant's own immune system actively producing antibodies. What type of immunity is this?

Accepted Answer

C. Naturally acquired passive immunity. — This describes naturally acquired passive immunity. 'Naturally acquired' refers to the transfer of antibodies through natural processes like the placenta or breast milk, and 'passive' means the individual receives pre-formed antibodies rather than producing their own. This provides immediate but temporary protection. Active immunity (Options A and B) involves the body's own immune system producing antibodies, while artificially acquired immunity (Options B and D) involves medical interventions like vaccination or antitoxin injections.

Answer

A. Naturally acquired active immunity.

Answer

B. Artificially acquired active immunity.

Answer

D. Artificially acquired passive immunity.

Question 5

Synonym of 'vigorous':‌​‍

Accepted Answer

Energetic — Vigorous = strong, energetic, robust.‌​‍

Answer

Tired

Answer

Slow

Answer

Weak

Question 6

The language family of the Harappan script is:‌​‍

Accepted Answer

Unknown (script undeciphered) — Indus script remains undeciphered; linguistic affiliation is debated.‌​‍

Answer

Sumerian

Answer

Indo-European

Answer

Dravidian

Question 7

Kerala Mini Kits Agri Scheme:‌​‍

Accepted Answer

All — Comprehensive farmer support.‌​‍

Answer

Tools

Answer

Fertilizer

Answer

Seed distribution

Question 8

The past tense of 'go' is:

Accepted Answer

went — 'Went' is past simple; 'gone' is past participle.

Answer

goed

Answer

gone

Answer

going

Question 9

Photosynthesis takes place in the presence of:

Accepted Answer

Sunlight — Photosynthesis requires sunlight, carbon dioxide, and water. Chlorophyll in leaves absorbs sunlight to convert CO₂ and H₂O into glucose and oxygen.

Answer

Oxygen

Answer

Carbon Monoxide

Answer

Nitrogen

Question 10

Nuclear fusion:

Accepted Answer

Joining light atoms — Hydrogen → Helium. Powers the Sun.

Answer

Splitting atoms

Answer

Burning gas

Answer

Chemical reaction

HSA Mixed Practice Test #375