HSA Mixed Practice Test #749

Question 1

Citizenship means:

Accepted Answer

Full legal membership of a political community with rights and duties — Citizenship grants full political, civil, and social rights + corresponding duties.

Answer

Residence only

Answer

Passport

Answer

Voting

Question 2

Which of the following is a good conductor of electricity?‌​‍

Accepted Answer

Silver — Silver is the best metallic conductor; copper/aluminium used practically.‌​‍

Answer

Rubber

Answer

Glass

Answer

Wood

Question 3

The Muslim League was founded in 1906 at:

Accepted Answer

Dhaka — All-India Muslim League founded on 30 December 1906 at Dhaka (then East Bengal).

Answer

Delhi

Answer

Lahore

Answer

Aligarh

Question 4

Which is the densest naturally occurring element at STP?‌​‍

Accepted Answer

Osmium — Osmium (Os) has density 22.59 g/cm³ — densest natural element.‌​‍

Answer

Gold

Answer

Lead

Answer

Platinum

Question 5

The Cripps Mission to India (1942) was rejected because:‌​‍

Accepted Answer

It offered Dominion Status with provinces able to opt out (seen as endorsing partition) — Gandhi called Cripps offer 'a post-dated cheque on a failing bank'.‌​‍

Answer

It increased British forces

Answer

It offered full independence

Answer

It banned the Congress

Question 6

Impedance of LCR series circuit:‌​‍

Accepted Answer

Z = √(R² + (XL - XC)²) — XL = ωL, XC = 1/ωC. Resonance: XL = XC, Z = R (minimum), current max.‌​‍

Answer

L+C+R

Answer

R/L

Answer

R

Question 7

Human evolution — first hominid with larger brain:‌​‍

Accepted Answer

Homo habilis ('handy man') — ~2.5-1.5 mya. ‌​‍First tool maker. Brain ~650 cc. ‌​‍H. erectus: ~900 cc, first to migrate out of Africa, fire use.

Answer

Australopithecus

Answer

Neanderthal

Answer

Homo erectus

Question 8

Battle of Buxar:

Accepted Answer

1764 — 1764 — British defeated combined forces of Mir Qasim, Shuja-ud-Daulah, Shah Alam II.

Answer

1757

Answer

1857

Answer

1761

Question 9

The critical angle of glass (n ≈ 1.5) for total internal reflection in air is approximately:‌​‍

Accepted Answer

42° — sin⁻¹(1/1.5) ≈ 41.8° ≈ 42°.‌​‍

Answer

90°

Answer

62°

Answer

48°

Question 10

The gold foil (alpha-particle scattering) experiment established that an atom has:

Accepted Answer

A dense positively-charged nucleus with mostly empty space around it — Rutherford's 1911 experiment disproved Thomson's model and proposed a nuclear atom.

Answer

A uniform sphere of positive charge

Answer

Only electrons

Answer

A plum-pudding structure

HSA Mixed Practice Test #749