Plus 2 Lecturer Mixed Practice Test #400

Question 1

Which gas is essential for combustion?‌​‍

Accepted Answer

Oxygen — Oxygen supports combustion; other gases extinguish flames.‌​‍

Answer

Hydrogen

Answer

Nitrogen

Answer

Carbon dioxide

Question 2

Kerala's state animal:‌​‍

Accepted Answer

Elephant — Indian Elephant is Kerala's state animal.‌​‍

Answer

Lion-tailed Macaque

Answer

Nilgiri Tahr

Answer

Tiger

Question 3

The quality of being clever, original, and inventive is ___.

Accepted Answer

ingenuity — Ingenuity = cleverness / inventiveness.

Answer

ineptitude

Answer

incompetence

Answer

clumsiness

Question 4

Environmental pollutant known as greenhouse gas is:

Accepted Answer

CO₂ — Absorbs IR. Others: CH₄, N₂O, CFCs, H₂O vapour, O₃. Preindustrial CO₂ ~280 ppm; now >420 ppm.

Answer

N₂

Answer

O₂

Answer

H₂

Question 5

Sahodaran Ayyappan is associated with the slogan:

Accepted Answer

No Caste No Religion No God — Sahodaran Ayyappan extended Sree Narayana Guru's slogan to 'No Caste, No Religion, No God for Mankind'.

Answer

One Caste One Religion One God

Answer

Educate Organise Agitate

Answer

Freedom is my Birthright

Question 6

The critical angle of glass (n ≈ 1.5) for total internal reflection in air is approximately:‌​‍

Accepted Answer

42° — sin⁻¹(1/1.5) ≈ 41.8° ≈ 42°.‌​‍

Answer

90°

Answer

62°

Answer

48°

Question 7

COVID-19 is caused by:‌​‍

Accepted Answer

SARS-CoV-2 virus — Novel coronavirus SARS-CoV-2.‌​‍

Answer

Bacteria

Answer

Protozoa

Answer

Fungus

Question 8

ICDS (Integrated Child Development Services):‌​‍

Accepted Answer

1975 — World's largest early childhood programme. ‌​‍Anganwadis deliver nutrition, immunisation, pre-school ed, health. Women & Child Development Ministry.

Answer

1947

Answer

2000

Answer

1991

Question 9

Technetium-99m (Tc-99m) is widely used in diagnostic imaging due to its ideal physical properties. Which of the following is NOT a characteristic contributing to its suitability?

Accepted Answer

D. Emission of alpha particles — Tc-99m is ideal for diagnostic imaging because it has a short half-life (6 hours), emits gamma rays (which can be detected externally), and results in a low patient radiation dose. Alpha particles are highly energetic and would deliver a high, localized radiation dose, making them unsuitable for diagnostic imaging.

Answer

A. Short half-life

Answer

B. Emission of gamma rays

Answer

C. Low patient radiation dose

Question 10

Number of permutations of word 'MATHS':‌​‍

Accepted Answer

120 — 5 distinct letters → 5! ‌​‍= 120. With repetition, divide by factorial of repeat counts.

Answer

720

Answer

24

Answer

60

Plus 2 Lecturer Mixed Practice Test #400