VFA Mixed Practice Test #631

Question 1

Which tree is generally grown for forestation?

Accepted Answer

Teak — Teak is widely planted for commercial afforestation.

Answer

Mango Tree

Answer

Coconut Tree

Answer

Banyan

Question 2

Warm-blooded animals:‌​‍

Accepted Answer

Birds, mammals — Endotherms.‌​‍

Answer

Reptiles

Answer

Amphibians

Answer

Fish

Question 3

The economic reforms introduced in India in 1991 marked a significant paradigm shift from the earlier state-led development model. What was the most profound change in the Indian state's approach to economic management post-1991?

Accepted Answer

B. The state's role transitioned from being a dominant producer and controller to primarily acting as a facilitator and regulator of economic activity. — The 1991 economic reforms fundamentally changed the state's role from a central planner and dominant producer to a facilitator and regulator. This involved reducing licensing, opening up sectors to private investment, and integrating India more with the global economy, allowing market forces a greater role while the state focused on creating an enabling environment. Options A, C, and D misrepresent the extent or direction of these reforms.

Answer

A. The state completely withdrew from all economic sectors, privatizing every public sector undertaking.

Answer

C. The government significantly increased its direct allocation of resources to heavy industries to achieve rapid industrialization.

Answer

D. The focus shifted entirely towards agrarian development, with industrial growth being de-emphasized to prioritize rural upliftment.

Question 4

Kerala Rural Development Programme funds:‌​‍

Accepted Answer

All — Central and state schemes.‌​‍

Answer

Unknown

Answer

MGNREGA + state

Answer

DCP

Question 5

When selecting a new digital teaching aid for a specific lesson, a teacher should primarily consider its:

Accepted Answer

C. Alignment with learning objectives and pedagogical effectiveness. — The primary consideration for selecting any teaching aid, especially a digital one, must be its alignment with specific learning objectives and its potential for pedagogical effectiveness. The tool should genuinely support the desired learning outcomes and enhance the teaching-learning process, rather than just being visually appealing or popular.

Answer

A. Aesthetic appeal and advanced graphic design.

Answer

B. Compatibility with all available classroom devices.

Answer

D. Popularity among students and peers.

Question 6

The United State of Travancore and Cochin, formed in 1949, represented a crucial step towards the political integration of princely states in South India. However, its eventual transformation into the state of Kerala in 1956 was primarily driven by a different set of principles. Which of the following principles was most influential in the transition from Travancore-Cochin to the unified Kerala State?

Accepted Answer

A. The objective of consolidating all Malayalam-speaking regions under a single administrative unit. — The formation of Kerala State in 1956, through the States Reorganisation Act, was primarily driven by the linguistic principle. The objective was to bring together all Malayalam-speaking regions, including Travancore-Cochin and the Malabar district (from Madras Presidency), into a single administrative entity. This move was in line with the broader national policy of reorganizing states on linguistic lines to ensure cultural and administrative coherence.

Answer

B. The need to establish a stronger central government control over the erstwhile princely states.

Answer

C. Addressing the economic disparities and development imbalances between Travancore and Cochin regions.

Answer

D. Resolving long-standing territorial disputes between the former princely states of Travancore and Cochin.

Question 7

Fossils are best preserved in:‌​‍

Accepted Answer

Sedimentary rocks — Rapid burial in low-O2 sediment. ‌​‍Types: body fossils, trace fossils, amber, permineralisation. Index fossils for stratigraphic correlation.

Answer

Igneous

Answer

Metamorphic

Answer

Volcanic

Question 8

Biogeochemical cycles include:‌​‍

Accepted Answer

Water, Carbon, Nitrogen, Phosphorus — Gaseous cycles: C, N (atmosphere). ‌​‍Sedimentary: P, S (crust). Human activity disrupts cycles (fertilizer N, burning C).

Answer

Random

Answer

Only water

Answer

Only carbon

Question 9

In the context of nuclear fission reactors, what is the primary purpose of a moderator like heavy water (D2O) in a thermal reactor?

Accepted Answer

B. To slow down fast neutrons to thermal energies for sustained fission reactions — A moderator slows down fast neutrons (with energies ~1 MeV) emitted during fission to thermal energies (~0.025 eV), which increases the probability of further fission reactions in U-235. Option A describes a control rod's function, C is incorrect as thermal energy conversion is handled by heat exchangers/turbines, and D refers to shielding materials like lead or concrete.

Answer

A. To absorb excess neutrons and prevent chain reactions from escalating

Answer

C. To convert thermal energy directly into electrical energy via thermionic emission

Answer

D. To shield the reactor core from gamma radiation emitted during fission

Question 10

D Gukesh World Chess Champion:‌​‍

Accepted Answer

2024 Dec — Beat Ding Liren, Singapore Dec 2024.‌​‍

Answer

2025

Answer

Lost

Answer

2023

VFA Mixed Practice Test #631