LGS Mixed Practice Test #337

Question 1

Pointing to a photo, a man says 'She is my mother's daughter.' The person is his:‌​‍

Accepted Answer

Sister — Mother's daughter = his sister.‌​‍

Answer

Mother

Answer

Daughter

Answer

Aunt

Question 2

Speed of electromagnetic waves in vacuum:

Accepted Answer

3 × 10⁸ m/s — c = 1/√(μ₀ε₀). Maxwell predicted; Hertz confirmed. All EM waves travel at c in vacuum.

Answer

3 × 10⁶

Answer

1.5 × 10⁸

Answer

3 × 10¹⁰

Question 3

The process by which kidneys clean blood using an artificial membrane is:

Accepted Answer

Dialysis — Haemodialysis removes wastes when kidneys fail.

Answer

Osmosis

Answer

Diffusion

Answer

Active transport

Question 4

The problem was ___ difficult that I could not solve it.

Accepted Answer

so — 'so + adjective + that' construction — 'so difficult that…'.

Answer

very

Answer

too

Answer

much

Question 5

Which port in Kerala handles the most cargo?‌​‍

Accepted Answer

Kochi Port — Kochi Port (Cochin Port) is the major port in Kerala and handles the largest volume of cargo.‌​‍

Answer

Vizhinjam

Answer

Beypore

Answer

Azhikkal

Question 6

Kerala Lok Ayukta:‌​‍

Accepted Answer

1999 — Kerala Lokayukta Act 1999.‌​‍

Answer

1995

Answer

2005

Answer

2010

Question 7

K-FON:

Accepted Answer

Kerala Fibre Optic Network — Free/cheap broadband to all households.

Answer

Kerala Food

Answer

Kerala Finance

Answer

None

Question 8

Which virus is treated as the first computer virus?

Accepted Answer

Creeper virus — Creeper (1971) was the first self-replicating program on ARPANET.

Answer

Trojan horse

Answer

SCA virus

Answer

Rabbit

Question 9

The Hundred Years' War (1337-1453) was fought between:‌​‍

Accepted Answer

England and France — Series of conflicts over French throne. ‌​‍Joan of Arc led French resistance. Ended with French victory; English expelled from France (except Calais).

Answer

Rome and Carthage

Answer

UK and India

Answer

Spain and Portugal

Question 10

The synthesis of aspirin (acetylsalicylic acid) typically involves the acetylation of salicylic acid. Which reagent is commonly used for this acetylation reaction?

Accepted Answer

C. Acetic anhydride — Aspirin is synthesized by the esterification of the phenolic hydroxyl group of salicylic acid. Acetic anhydride is the preferred acetylating agent for this reaction, reacting with salicylic acid to form acetylsalicylic acid and acetic acid as a byproduct. Concentrated sulfuric acid is a catalyst, and sodium hydroxide and ethanol are not suitable acetylating agents for this purpose.

Answer

A. Concentrated sulfuric acid

Answer

B. Sodium hydroxide

Answer

D. Ethanol

LGS Mixed Practice Test #337