LGS Mixed Practice Test #718

Question 1

Which statements about the solar system are true? ‌​‍(i) Ptolemy developed the Geocentric System (ii) In Geocentric, Earth is stationary at centre (iii) Heliocentric superseded Geocentric (iv) Heliocentric by Copernicus

Accepted Answer

All four — All four are correct historical and scientific facts.‌​‍

Answer

Only (i & iv)

Answer

Only (i & iii)

Answer

Only (i, iii & iv)

Question 2

Vakkom Moulavi is called:‌​‍

Accepted Answer

Father of Muslim Renaissance in Kerala — Vakkom Moulavi (1873-1932) led Islamic reform in Kerala. ‌​‍He founded the Swadeshabhimani newspaper.

Answer

Kerala Gandhi

Answer

Kerala Simham

Answer

Lincoln of Kerala

Question 3

Abraham Accords (2020) normalised relations between:‌​‍

Accepted Answer

Israel and UAE, Bahrain (later Sudan, Morocco) — Trump-brokered Abraham Accords (Sept 2020). ‌​‍Major Gulf diplomatic shift. Saudi Arabia-Israel normalisation was considered but stalled post-Oct 2023 Gaza war.

Answer

Israel and Palestine

Answer

India-Pakistan

Answer

Iran-Israel

Question 4

Ramsar Convention is for:‌​‍

Accepted Answer

Wetlands of international importance — Signed in Ramsar, Iran (1971). ‌​‍India has 75+ Ramsar sites. Kerala — Ashtamudi, Sasthamcotta, Vembanad.

Answer

Forests

Answer

Coral reefs

Answer

Deserts

Question 5

The headquarters of Kerala State Planning Board is at:‌​‍

Accepted Answer

Thiruvananthapuram — The Kerala State Planning Board is headquartered in Thiruvananthapuram, the state capital.‌​‍

Answer

Thrissur

Answer

Kochi

Answer

Kozhikode

Question 6

In the context of radiation safety protocols for nuclear facilities, which type of radiation primarily necessitates the use of thick, high-density materials like lead or concrete for effective external shielding?

Accepted Answer

C. Gamma rays, which are high-energy photons with no charge or mass. — Gamma rays are high-energy electromagnetic radiation (photons) that are highly penetrating due to their lack of charge and mass. Effective shielding against external gamma radiation requires dense, thick materials like lead or concrete to absorb their energy. Alpha particles are easily stopped by paper, and beta particles by thin aluminum, while neutron shielding typically involves hydrogenous materials to slow them down.

Answer

A. Alpha particles, due to their large mass and high kinetic energy.

Answer

B. Beta particles, as they can travel several meters in air.

Answer

D. Neutrons, because they can induce radioactivity in other materials.

Question 7

The NEP 2020 emphasizes 'Experiential Learning' as a core pedagogical approach. Which of the following classroom activities best exemplifies this principle in a high school science classroom?

Accepted Answer

B. Conducting a virtual laboratory experiment on chemical reactions using simulation software — Experiential learning involves hands-on or interactive activities that allow students to learn by doing. Option B (virtual lab experiments) aligns best as it provides an immersive, interactive experience. Options A, C, and D rely on passive or theoretical approaches, which do not embody experiential learning principles.

Answer

A. Memorizing the periodic table through repetitive drills

Answer

C. Assigning textbook-based projects on environmental pollution with a 3-week deadline

Answer

D. Writing a 500-word essay on the life cycle of a butterfly from a reference book

Question 8

The male reproductive part of a flower is:‌​‍

Accepted Answer

Stamen — Stamen (anther + filament) is the male part. ‌​‍Pistil (stigma + style + ovary) is the female part.

Answer

Pistil

Answer

Petal

Answer

Sepal

Question 9

Scholasticism, which dominated medieval thought, was closely tied to:‌​‍

Accepted Answer

Christian theology — Scholasticism prioritised divine knowledge and the afterlife over worldly inquiry.‌​‍

Answer

Scientific rationalism

Answer

Ancient Greek philosophy

Answer

Islamic scholarship

Question 10

Dobereiner's triads were arranged by:‌​‍

Accepted Answer

Atomic mass (middle ≈ mean of extremes) — E.g., Li(7), Na(23), K(39): (7+39)/2 = 23. Failed for many elements.‌​‍

Answer

Atomic number

Answer

Density

Answer

Valency

LGS Mixed Practice Test #718