Plus 2 Lecturer Mixed Practice Test #109

Question 1

The alloy of copper and tin is:‌​‍

Accepted Answer

Bronze — Bronze = Copper + Tin. ‌​‍Brass = Copper + Zinc. Steel = Iron + Carbon. ‌​‍Solder = Lead + Tin.

Answer

Brass

Answer

Steel

Answer

Solder

Question 2

A codon consists of how many nucleotides?‌​‍

Accepted Answer

3 — Codon = 3 nucleotides specifying one amino acid (or stop signal).‌​‍

Answer

1

Answer

2

Answer

4

Question 3

During gas exchange in the lungs, oxygen moves from the alveoli into the pulmonary capillaries primarily due to which of the following principles?

Accepted Answer

C. Diffusion down its partial pressure gradient. — Gas exchange in the lungs, including the movement of oxygen from alveoli to capillaries, occurs primarily by simple diffusion. This process is driven by the difference in the partial pressure of oxygen between the alveoli (higher) and the pulmonary capillaries (lower). Active transport and facilitated diffusion are typically for solutes, and osmosis is for water movement.

Answer

A. Active transport against a concentration gradient.

Answer

B. Facilitated diffusion through protein channels.

Answer

D. Osmosis across the alveolar-capillary membrane.

Question 4

Synonym of EULOGY:‌​‍

Accepted Answer

Praise — Praise speech.‌​‍

Answer

Criticism

Answer

Blame

Answer

Attack

Question 5

One of the key recommendations of the National Education Policy (NEP) 2020 regarding school education is:

Accepted Answer

B. Introducing a 5+3+3+4 school curriculum structure — NEP 2020 proposes a 5+3+3+4 structure covering foundational, preparatory, middle, and secondary stages (B). It does not abolish CCE (A), mandate English-only instruction (C), or reduce vocational focus (D); instead, it emphasizes multilingualism and vocational integration.

Answer

A. Abolishing continuous and comprehensive evaluation (CCE)

Answer

C. Mandating English as the sole medium of instruction

Answer

D. Reducing the focus on vocational education

Question 6

Synonym of GAUDY:‌​‍

Accepted Answer

Showy — Brightly ostentatious.‌​‍

Answer

Plain

Answer

Subtle

Answer

Elegant

Question 7

Rahul Gandhi's record:‌​‍

Accepted Answer

Won both Wayanad and Rae Bareli — Won both.‌​‍

Answer

Only RB

Answer

Only Wayanad

Answer

Lost

Question 8

Laboratory test for unsaturation (alkene):‌​‍

Accepted Answer

Bromine water decolourisation / Baeyer's reagent — Baeyer's (alk KMnO₄) decolourised by C=C. Bromine water orange → colourless.‌​‍

Answer

Litmus

Answer

Flame

Answer

Fehling's

Question 9

A concave mirror is used in:‌​‍

Accepted Answer

Headlights and solar cookers — Concave mirrors converge light; used in torches, headlights, solar cookers.‌​‍

Answer

Sunglasses

Answer

Rear-view mirrors

Answer

Periscopes

Question 10

The modern periodic table has how many periods?‌​‍

Accepted Answer

7 — 7 horizontal rows (periods) in the modern periodic table.‌​‍

Answer

8

Answer

18

Answer

5

Plus 2 Lecturer Mixed Practice Test #109