General Science — Paired Mock 02 (50 Qs)

Question 1

Periodic table inventor:‌​‍

Accepted Answer

Mendeleev — Dmitri Mendeleev (1869).‌​‍

Answer

Dalton

Answer

Bohr

Answer

Rutherford

Question 2

Magnetic moment of current loop:‌​‍

Accepted Answer

m = IA (area × current) — Vector perpendicular to loop (right-hand rule). ‌​‍Torque in external B: τ = m × B.

Answer

m = qv

Answer

m = I²A

Answer

m = I/A

Question 3

Folic acid important during:‌​‍

Accepted Answer

Pregnancy — Prevents neural tube defects.‌​‍

Answer

Infancy only

Answer

Old age

Answer

Never

Question 4

Defense mechanism — reaction formation:‌​‍

Accepted Answer

Expressing opposite of what one feels — Other defenses: repression, denial, projection, displacement, sublimation, rationalisation, regression.‌​‍

Answer

Confronting

Answer

Forgetting

Answer

Accepting

Question 5

Vitamin A deficiency causes:‌​‍

Accepted Answer

Night blindness — Night blindness. Vitamin A = Retinol.‌​‍

Answer

Scurvy

Answer

Beriberi

Answer

Rickets

Question 6

The hormone-mimicking endocrine disruptor in some plastics is:‌​‍

Accepted Answer

Bisphenol A (BPA) — BPA, used in polycarbonate plastics and epoxy resins, mimics estrogen — banned in many products.‌​‍

Answer

Vitamin C

Answer

Caffeine

Answer

Glucose

Question 7

Hitler became German Chancellor in:‌​‍

Accepted Answer

1933 — Adolf Hitler appointed Chancellor 30 January 1933. ‌​‍Enabling Act March 1933 gave dictatorial powers. Became Führer 1934.

Answer

1918

Answer

1939

Answer

1923

Question 8

In electromagnetic waves, electric and magnetic fields are:‌​‍

Accepted Answer

Perpendicular to each other and to the direction of propagation — EM waves are transverse; E ⊥ B ⊥ direction of propagation.‌​‍

Answer

In phase only

Answer

Parallel

Answer

Random

Question 9

Torque on current loop in uniform magnetic field is maximum when:‌​‍

Accepted Answer

Plane of loop parallel to B (normal ⊥ B) — τ = NIAB sin θ, where θ = angle between m and B. Basis of motor/galvanometer.‌​‍

Answer

Plane perpendicular to B

Answer

No torque

Answer

Any angle

Question 10

The cell theory was proposed by:‌​‍

Accepted Answer

Schleiden and Schwann — Matthias Schleiden and Theodor Schwann (1838–39) proposed cell theory.‌​‍

Answer

Hooke and Leeuwenhoek

Answer

Watson and Crick

Answer

Darwin and Mendel

Question 11

Which vitamin is essential for blood clotting?‌​‍

Accepted Answer

Vitamin K — Vitamin K (Phylloquinone) is essential for blood clotting. ‌​‍Its deficiency leads to delayed clotting and excessive bleeding. Found in green leafy vegetables.

Answer

Vitamin D

Answer

Vitamin C

Answer

Vitamin A

Question 12

Vitamin D deficiency:‌​‍

Accepted Answer

Rickets — Rickets (children). Source: sunlight, fish.‌​‍

Answer

Scurvy

Answer

Beriberi

Answer

Night blindness

Question 13

Cell EMF ΔG relation:‌​‍

Accepted Answer

ΔG = -nFE — n = electrons, F = 96500 C/mol. Spontaneous cell: E>0, ΔG<0. K = exp(-ΔG°/RT).‌​‍

Answer

ΔG = nFE

Answer

ΔG = 0

Answer

ΔG = E/F

Question 14

Stokes' law: viscous force on a sphere moving in fluid is:‌​‍

Accepted Answer

F = 6πηrv — Applies for small spheres, low Re. ‌​‍Terminal velocity when gravity = buoyancy + drag.

Answer

F = ρVg

Answer

F = ηA dv/dx

Answer

F = ½ρv²A

Question 15

Adolf Hitler became Chancellor of Germany in:‌​‍

Accepted Answer

1933 — Hitler became Chancellor on 30 January 1933; quickly consolidated dictatorial power.‌​‍

Answer

1939

Answer

1918

Answer

1929

Question 16

Scurvy vitamin:‌​‍

Accepted Answer

C — Vitamin C deficiency.‌​‍

Answer

A

Answer

D

Answer

B

Question 17

The authority to issue 'writs' for enforcement of Fundamental Rights rests with:‌​‍

Accepted Answer

The Supreme Court and High Courts — SC under Article 32 and HCs under Article 226.‌​‍

Answer

The President

Answer

The Parliament

Answer

The CBI

Question 18

India's first Armed Forces Day:‌​‍

Accepted Answer

Jan 15 (Army Day) — Army Day 15 Jan.‌​‍

Answer

15 Aug

Answer

26 Jan

Answer

None common

Question 19

Basic Structure elements (Kesavananda):‌​‍

Accepted Answer

All and more — Multiple — not an exhaustive list, includes federalism, republic, democracy.‌​‍

Answer

Secular nature

Answer

Supremacy of Constitution

Answer

Judicial review, rule of law

Question 20

The source-based approach in history emphasises:‌​‍

Accepted Answer

Critical reading of inscriptions, coins, texts, travellers' accounts, archaeology — SCERT XII textbook uses themes reconstructed from multiple, often conflicting, sources — Ibn Battuta, Bernier, Al-Biruni, Abul Fazl, Buchanan-Hamilton, etc.‌​‍

Answer

Only oral tradition

Answer

Only one source type

Answer

Only textbooks

Question 21

ABA (abscisic acid) functions:‌​‍

Accepted Answer

Stress hormone — induces dormancy, closes stomata — Also called stress hormone. Antagonist to gibberellin.‌​‍

Answer

Cell division

Answer

Flowering

Answer

Promotes growth

Question 22

Which Union Ministry launched the e-Shram portal (centralized database of unorganized workers)?‌​‍

Accepted Answer

Ministry of Labour and Employment — e-Shram was launched in August 2021 by the Ministry of Labour & Employment.‌​‍

Answer

Ministry of Finance

Answer

Ministry of Skill Development and Entrepreneurship

Answer

Ministry of Social Justice and Empowerment

Question 23

Photosynthesis occurs in:‌​‍

Accepted Answer

Leaves — Leaves contain chloroplasts with chlorophyll that carry out photosynthesis.‌​‍

Answer

Roots

Answer

Stem

Answer

Flowers

Question 24

Which hormone increases the rates of almost all chemical reactions in all cells of the body?‌​‍

Accepted Answer

Thyroxine — Thyroxine (T4) regulates metabolism in all cells.‌​‍

Answer

Adrenaline

Answer

Oxytocin

Answer

Cortisol

Question 25

Sulphuric acid is often called:‌​‍

Accepted Answer

All of these — H₂SO₄ is called the king of chemicals and oil of vitriol — major industrial acid.‌​‍

Answer

King of acids

Answer

Oil of vitriol

Answer

Queen of chemicals

General Science — Paired Mock 02 (50 Qs)