HSA Mixed Practice Test #905

Question 1

Which event marked the beginning of the organized freedom struggle in India after the Revolt of 1857?

Accepted Answer

A. Formation of the Indian National Congress in 1885 — The Indian National Congress was formed in 1885, which marked the beginning of organized political agitation against British rule. Though the Revolt of 1857 was a major uprising, it was not organized by a political party. The Partition of Bengal, Non-Cooperation Movement, and Civil Disobedience Movement occurred later, representing different phases of the freedom struggle.

Answer

B. Partition of Bengal in 1905

Answer

C. Non-Cooperation Movement launched in 1920

Answer

D. Civil Disobedience Movement initiated in 1930

Question 2

Down syndrome:‌​‍

Accepted Answer

Trisomy 21 — Extra chromosome 21.‌​‍

Answer

XXY

Answer

Trisomy 18

Answer

Monosomy

Question 3

First law of thermodynamics is statement of:‌​‍

Accepted Answer

Conservation of energy (dQ = dU + dW) — Energy is conserved; heat added = increase in internal energy + work done by system. ‌​‍Sign conventions important.

Answer

Heat flow direction

Answer

Entropy

Answer

Absolute zero

Question 4

Who made the Temple Entry Proclamation in Travancore?‌​‍

Accepted Answer

Sree Chithira Thirunal — Sree Chithira Thirunal Balarama Varma proclaimed temple entry on 12 November 1936.‌​‍

Answer

Sree Moolam Thirunal

Answer

Rani Gowri Lakshmi Bai

Answer

Swathi Thirunal

Question 5

Tense — present perfect:‌​‍

Accepted Answer

I have eaten (action completed with present relevance) — 'Have/has + past participle'. ‌​‍Just, already, yet, since, for. Connects past to present.

Answer

I eat

Answer

I will eat

Answer

I was eating

Question 6

An enzyme's activity is significantly affected by various factors. Which of the following factors primarily influences the three-dimensional structure of an enzyme, thereby altering its catalytic efficiency?

Accepted Answer

C. pH and temperature — pH and temperature are critical environmental factors that affect the three-dimensional structure (conformation) of an enzyme. Extreme deviations from optimal pH or temperature can cause denaturation, leading to irreversible loss of enzyme activity. Substrate and product concentrations affect reaction rates but not the enzyme's intrinsic structure, while cofactors assist enzyme function but don't primarily alter its structure in this manner.

Answer

A. Substrate concentration

Answer

B. Product concentration

Answer

D. Presence of cofactors

Question 7

Right to Freedom article range:‌​‍

Accepted Answer

19-22 — Art 19-22.‌​‍

Answer

23-24

Answer

14-18

Answer

25-28

Question 8

Kerala state fruit:‌​‍

Accepted Answer

Jackfruit — Jackfruit (Chakka).‌​‍

Answer

Pineapple

Answer

Mango

Answer

Banana

Question 9

Study of fungi:‌​‍

Accepted Answer

Mycology — Mycology.‌​‍

Answer

Bacteriology

Answer

Virology

Answer

Protozoology

Question 10

Atomic bombs were dropped on Japan:‌​‍

Accepted Answer

Hiroshima (6 Aug) + Nagasaki (9 Aug) 1945 — USA dropped 'Little Boy' on Hiroshima, 'Fat Man' on Nagasaki. ‌​‍200,000+ killed. Japan surrendered 15 August 1945 (V-J Day).

Answer

Tokyo only

Answer

1944

Answer

Only Hiroshima

HSA Mixed Practice Test #905