VFA Mixed Practice Test #673

Question 1

A significant crude oil spill has occurred along the Kerala coastline, posing severe threats to marine biodiversity and local livelihoods. Considering both efficacy and environmental sustainability, which biotechnological strategy would be the most appropriate for remediation?

Accepted Answer

C. Deploying genetically engineered microorganisms (GEMs) specifically designed for enhanced hydrocarbon degradation, along with biostimulation techniques. — Option C, deploying genetically engineered microorganisms (GEMs) with biostimulation, represents the most advanced and effective biotechnological approach for large-scale crude oil spill remediation. GEMs can be tailored for enhanced and rapid degradation of specific hydrocarbons, offering superior efficiency compared to naturally occurring microbes. Option A, while using natural bacteria, may be less efficient and the introduction of non-native strains from 'other sites' could pose ecological risks. Option B is a chemical method, not biotechnological, and can introduce secondary pollutants. O

Answer

A. Introducing large quantities of naturally occurring, indigenous oil-degrading bacteria collected from other contaminated sites.

Answer

B. Applying chemical dispersants to break down the oil, followed by physical removal.

Answer

D. Implementing phytoremediation using oil-tolerant mangrove species.

Question 2

Fundamental Duties were incorporated by which amendment?‌​‍

Accepted Answer

42nd — 42nd Amendment 1976 added Part IVA (Article 51A) — Fundamental Duties.‌​‍

Answer

43rd

Answer

34th

Answer

24th

Question 3

The gas responsible for global warming is:‌​‍

Accepted Answer

Carbon Dioxide — CO₂ is the primary greenhouse gas causing global warming through the greenhouse effect.‌​‍

Answer

Oxygen

Answer

Nitrogen

Answer

Helium

Question 4

Big Five personality traits (OCEAN):‌​‍

Accepted Answer

Openness, Conscientiousness, Extraversion, Agreeableness, Neuroticism — Also called Five-Factor Model. ‌​‍Most accepted trait theory. Stable across cultures.

Answer

Only introvert

Answer

Only IQ

Answer

4 humors

Question 5

Chalakudy River is the ___ longest river of Kerala:‌​‍

Accepted Answer

Fifth — Chalakudy River is the fifth longest river in Kerala at about 145 km.‌​‍

Answer

Third

Answer

Sixth

Answer

Fourth

Question 6

The brain is protected by:‌​‍

Accepted Answer

Skull (Cranium) — The skull (cranium) protects the brain. The spine protects the spinal cord.‌​‍

Answer

Ribs

Answer

Spine

Answer

Sternum

Question 7

When was the internet made available to the public in India?‌​‍

Accepted Answer

15 August 1995 — VSNL (Videsh Sanchar Nigam Limited) launched public internet service in India on 15 August 1995.‌​‍

Answer

26 January 1995

Answer

1 January 1996

Answer

15 August 1997

Question 8

The Moplah/Mappila Rebellion (1921) occurred in:‌​‍

Accepted Answer

Malabar (Kerala) — Agrarian rebellion of Muslim tenants (Mappilas) against Hindu Namboodiri/Nair landlords during Khilafat-Non-Cooperation. ‌​‍Controversial — communal violence alleged in later phase. Wagon tragedy (Nov 1921).

Answer

Punjab

Answer

Maharashtra

Answer

Bengal

Question 9

Longest river:‌​‍

Accepted Answer

Periyar — Periyar (244 km).‌​‍

Answer

Bharathapuzha

Answer

Pamba

Answer

Chaliyar

Question 10

DNA fingerprinting probes target:‌​‍

Accepted Answer

VNTRs (Variable Number Tandem Repeats) — highly polymorphic — Unique pattern per individual (except identical twins). ‌​‍Forensics, paternity, wildlife. Minisatellites and microsatellites.

Answer

Coding DNA

Answer

Centromeres

Answer

Only exons

VFA Mixed Practice Test #673