LGS Mixed Practice Test #596

Question 1

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 2

Adam Smith:‌​‍

Accepted Answer

Father of Economics — 'Wealth of Nations' (1776).‌​‍

Answer

Father of Physics

Answer

Father of Chemistry

Answer

Father of Biology

Question 3

Chandrayaan-1 discovered:‌​‍

Accepted Answer

Water on Moon — Chandrayaan-1 (2008) discovered water molecules on the Moon's surface — a major scientific finding.‌​‍

Answer

Life on Moon

Answer

Gold on Moon

Answer

Oxygen on Moon

Question 4

Kant's Categorical Imperative:

Accepted Answer

Act only on maxim you could will as universal law — Groundwork of Metaphysics of Morals (1785). Deontology (duty ethics). Contrast: consequentialism (Bentham, Mill — utilitarianism).

Answer

Act selfishly

Answer

Follow authority

Answer

No ethics

Question 5

Kerala's sex ratio in 2011 Census was:‌​‍

Accepted Answer

1058 — Kerala: 1084 females per 1000 males (2011) — highest in India.‌​‍

Answer

1000

Answer

1084

Answer

1033

Question 6

Plant hormone for cell division:‌​‍

Accepted Answer

Cytokinin — Cytokinin promotes cell division.‌​‍

Answer

Gibberellin

Answer

Ethylene

Answer

Auxin

Question 7

A 12-month-old infant is expected to achieve which of the following fine motor milestones?

Accepted Answer

B. Uses a pincer grasp to pick up small objects — At 12 months, infants typically develop a refined pincer grasp, allowing them to pick up small objects like crumbs. Stacking 2 blocks is usually achieved around 15-18 months, drawing a circle around 3 years, and tying shoelaces much later, around 5-6 years of age.

Answer

A. Stacks 2 blocks

Answer

C. Draws a circle

Answer

D. Ties shoelaces

Question 8

The most abundant element in the Earth's crust is:‌​‍

Accepted Answer

Oxygen — Oxygen is the most abundant element in Earth's crust (~46% by weight), followed by Silicon (~28%), Aluminium (~8%), and Iron (~5%).‌​‍

Answer

Silicon

Answer

Iron

Answer

Aluminium

Question 9

Travancore Royal Family:‌​‍

Accepted Answer

Venad — Venad lineage.‌​‍

Answer

Perumpadappu

Answer

Kolathiri

Answer

Nair

Question 10

AC generator (dynamo) works on:‌​‍

Accepted Answer

Electromagnetic induction — Coil rotating in magnetic field → sinusoidal EMF. ‌​‍Slip rings for AC; commutator for DC.

Answer

Coulomb's law

Answer

Gauss's law

Answer

Ohm's law

LGS Mixed Practice Test #596