HSA Mixed Practice Test #75

Question 1

Which organ purifies blood in the human body?‌​‍

Accepted Answer

Kidney — Kidneys filter and purify blood, removing waste products and excess water to form urine. ‌​‍Each kidney has about 1 million nephrons.

Answer

Lungs

Answer

Heart

Answer

Liver

Question 2

Rate of reaction depends on concentration as per:‌​‍

Accepted Answer

Rate law: rate = k[A]^m[B]^n — Order = m+n (experimentally determined). ‌​‍Different from stoichiometric coefficients (unless elementary).

Answer

Ohm's law

Answer

Raoult's law

Answer

Arrhenius

Question 3

The minimum age to be President of India is:‌​‍

Accepted Answer

35 — Article 58: President must be 35+, a citizen, qualified for Lok Sabha.‌​‍

Answer

30

Answer

25

Answer

40

Question 4

Rickets in children is caused by deficiency of:‌​‍

Accepted Answer

Vitamin D — Vitamin D deficiency → poor Ca absorption → weak, bent bones (rickets).‌​‍

Answer

Vitamin C

Answer

Vitamin A

Answer

Vitamin E

Question 5

mRNA codon — start codon:

Accepted Answer

AUG (Methionine) — Stop codons: UAA, UAG, UGA (amber, ochre, opal). Genetic code is degenerate, non-overlapping, nearly universal.

Answer

UAA

Answer

UAG

Answer

UGA

Question 6

Which of the following was a direct consequence of the 'Quit India Movement' (1942) launched by the Indian National Congress?

Accepted Answer

C. Large-scale arrests of Congress leaders and suppression of the movement — The Quit India Movement resulted in the arrest of key Congress leaders like Gandhi and Nehru, leading to a temporary suppression of the movement. The British did not withdraw immediately, nor was Dominion Status granted at that time. The Interim Government was formed later, in 1946, under the Cabinet Mission Plan.

Answer

A. Immediate British withdrawal from India

Answer

B. Formation of the Interim Government under the Cabinet Mission Plan

Answer

D. Granting of Dominion Status to India in 1942

Question 7

Inductive effect (–I):

Accepted Answer

Withdraws electrons through sigma bonds — Electronegative groups (–NO₂, –CN, –Cl) pull e⁻ density. +I: alkyl groups donate.

Answer

Donates electrons

Answer

Only π

Answer

Hyperconjugation

Question 8

A significant deadlock arises between the Lok Sabha and the Rajya Sabha over an ordinary bill. The Lok Sabha passed the bill, but the Rajya Sabha proposed amendments that the Lok Sabha rejected. What is the most appropriate constitutional mechanism to resolve this impasse?

Accepted Answer

C. The President may summon a joint sitting of both Houses to deliberate and vote on the bill. — Article 108 of the Indian Constitution provides for a joint sitting of both Houses of Parliament to resolve a deadlock over an ordinary bill. If a bill passed by one House is rejected by the other, or if there is a disagreement on amendments, or if more than six months have passed without the other House passing it, the President can summon a joint sitting. This mechanism ensures legislative continuity despite differences.

Answer

A. The bill is automatically deemed to have lapsed, and a new bill must be introduced.

Answer

B. The Speaker of the Lok Sabha, in consultation with the Chairman of the Rajya Sabha, makes a final decision on the disputed clauses.

Answer

D. The Rajya Sabha must yield to the Lok Sabha's decision as the latter represents the people directly.

Question 9

To promote a sense of ownership and reduce conflicts over shared resources in the classroom (e.g., art supplies, books), which classroom management technique would be most effective?

Accepted Answer

A. Assigning specific students as "resource managers" for each type of material. — Assigning students as resource managers fosters a sense of responsibility and ownership, teaching them to care for and organize shared materials, thereby reducing conflicts and disorganization. Strict "hands-off" rules can hinder access, individual sets are often impractical, and unsupervised free access leads to chaos.

Answer

B. Labeling all resources with strict "hands-off" rules unless explicitly permitted by the teacher.

Answer

C. Purchasing individual sets of all resources for every student to avoid sharing.

Answer

D. Allowing students to freely take and return resources as they see fit without supervision.

Question 10

Place where dead bodies kept:

Accepted Answer

Morgue — Morgue.

Answer

Cemetery

Answer

Crematorium

Answer

Mausoleum

HSA Mixed Practice Test #75