LGS Mixed Practice Test #6

Question 1

The chemical symbol of Iron is:‌​‍

Accepted Answer

Fe — Iron's chemical symbol is Fe (from Latin 'Ferrum'). ‌​‍Ir = Iridium, In = Indium, I = Iodine.

Answer

I

Answer

Ir

Answer

In

Question 2

Which is a reason for Astigmatism?‌​‍

Accepted Answer

Defect in curvature of cornea or lens — Astigmatism is caused by irregular curvature of cornea or lens.‌​‍

Answer

Loss of transparency of lens

Answer

High blood pressure within the eye

Answer

Inflammation of conjunctiva

Question 3

Which of the following is a key function of HDL (High-Density Lipoprotein) in lipid metabolism?

Accepted Answer

B. It delivers cholesterol from peripheral tissues back to the liver for excretion — HDL functions in reverse cholesterol transport, delivering excess cholesterol from peripheral tissues back to the liver for excretion, which is protective against atherosclerosis. LDL primarily carries cholesterol from the liver to tissues, while chylomicrons transport dietary lipids.

Answer

A. It transports dietary lipids from the intestine to peripheral tissues

Answer

C. It is the primary carrier of triglycerides in fasting plasma

Answer

D. It is synthesized in the intestinal mucosa and released into the bloodstream

Question 4

PLI (Production Linked Incentive) Scheme was launched in:

Accepted Answer

2020 — PLI schemes launched 2020 to boost manufacturing across 14 sectors (mobile, semiconductors, pharma, textiles, auto, etc.).

Answer

2018

Answer

2019

Answer

2021

Question 5

As per the RTE Act, what is the minimum age for admission to Class 1 in a school in India?

Accepted Answer

B. 6 years — The RTE Act mandates that the minimum age for admission to Class 1 is 6 years. Option A is incorrect as it does not align with the Act's provisions. Options C and D are also incorrect as they do not meet the statutory age requirement.

Answer

A. 5 years

Answer

C. 5.5 years

Answer

D. 4 years

Question 6

Inert pair effect is seen strongly in:

Accepted Answer

Heavier p-block (Tl, Pb, Bi) — Lower oxidation state (by 2) becomes more stable down the group (e.g., Pb²⁺ > Pb⁴⁺; Tl⁺ > Tl³⁺).

Answer

Group 1

Answer

Transition metals

Answer

Noble gases

Question 7

Kerala State Election Commission:‌​‍

Accepted Answer

Statutory for local bodies — Conducts local body elections.‌​‍

Answer

Political

Answer

Judicial

Answer

None

Question 8

Which of the following is a characteristic feature of penicillin antibiotics that makes them effective against bacterial infections?

Accepted Answer

A. Presence of a beta-lactam ring — The beta-lactam ring in penicillin is essential for its antibacterial activity as it interferes with bacterial cell wall synthesis by inhibiting transpeptidases. High lipophilicity, aromatic rings, and long half-life are not defining features of penicillin's mechanism of action.

Answer

B. High lipophilicity

Answer

C. Aromatic ring system

Answer

D. Long plasma half-life

Question 9

DNA fingerprinting was developed by:‌​‍

Accepted Answer

Alec Jeffreys (1984) — Based on VNTRs. ‌​‍Used in forensics, paternity, conservation. Indian version — Lalji Singh (CCMB Hyderabad).

Answer

Watson

Answer

Darwin

Answer

Mendel

Question 10

A regular polygon has interior angle 150°. Number of sides:

Accepted Answer

12 — Exterior = 180−150 = 30°; n = 360/30 = 12.

Answer

8

Answer

10

Answer

15

LGS Mixed Practice Test #6