VFA Mixed Practice Test #201

Question 1

Kerala is actively promoting the development of its inland waterways, particularly the West Coast Canal, to enhance sustainable transport. Which of the following is the MOST significant advantage of developing inland waterways for freight transport in Kerala compared to road or rail?

Accepted Answer

D. Lower operational costs and reduced carbon footprint per ton-kilometer of cargo. — Inland water transport is globally recognized for its superior fuel efficiency and capacity to carry bulk cargo, resulting in significantly lower operational costs and a reduced carbon footprint per ton-kilometer compared to road or rail. While utilizing existing waterways can reduce new land acquisition (Option B), the primary and most significant advantage for sustainable freight movement lies in its economic and environmental efficiency. Options A and C are generally incorrect for inland water transport.

Answer

A. Significantly faster transit times for long-distance cargo movement.

Answer

B. Requires minimal land acquisition compared to expanding road or rail networks.

Answer

C. Offers greater flexibility in route selection and door-to-door delivery.

Question 2

Natural fibres include:‌​‍

Accepted Answer

Cotton (cellulose), Silk (protein), Wool (protein), Jute — Synthetic: nylon, polyester, acrylic. ‌​‍Regenerated (semi-synthetic): rayon, viscose. India leader in cotton and jute.

Answer

Polyester

Answer

Acrylic

Answer

Nylon

Question 3

When sound waves go from air (rarer) to water (denser), the speed:‌​‍

Accepted Answer

Increases — Sound speed: air 343 m/s, water ~1482 m/s, steel ~5960 m/s — faster in denser elastic media.‌​‍

Answer

Stays same

Answer

Decreases

Answer

Becomes zero

Question 4

What does Charles Horton Cooley's concept 'looking-glass self' mean?‌​‍

Accepted Answer

We develop self-image through others' perceptions — Cooley (1902): self emerges via 3 steps — we imagine how we appear to others, imagine their judgment, develop self-feeling.

Answer

Self-reflection in mirrors

Answer

Physical appearance

Answer

Narcissism

Question 5

A teacher observes that a student, Priya, frequently appears tired, hungry, and struggles to concentrate in class, often falling asleep. According to Maslow's Hierarchy of Needs, which level of needs should the teacher prioritize addressing before expecting academic improvement?

Accepted Answer

C. Physiological needs — Maslow's Hierarchy of Needs posits that basic physiological needs, such as food and rest, must be met before an individual can focus on higher-level needs like learning and concentration. Priya's symptoms of tiredness and hunger indicate unmet physiological needs, which are fundamental to her ability to engage in academic activities. Addressing esteem, self-actualization, or love and belonging needs would be less effective if these basic needs are not first satisfied.

Answer

A. Self-actualization needs

Answer

B. Esteem needs

Answer

D. Love and belonging needs

Question 6

Match periodicals to founders: (i) Sadhujana Doothan (ii) Harijan (iii) Mitavadi (iv) Al-Islam with (a) K.P. ‌​‍Vallon (b) C. Krishnan (c) Vakkom Maulavi (d) Pampadi John Joseph

Accepted Answer

i-d, ii-a, iii-b, iv-c — Sadhujana Doothan-Pampadi John Joseph; Harijan-K.P. ‌​‍Vallon; Mitavadi-C. Krishnan; Al-Islam-Vakkom Maulavi.

Answer

i-d, ii-a, iii-c, iv-b

Answer

i-c, ii-a, iii-d, iv-b

Answer

i-b, ii-d, iii-a, iv-c

Question 7

Which of the following best explains the genetic basis of sickle cell anemia?

Accepted Answer

B. A missense mutation in the HBB gene causing a substitution of valine for glutamic acid at the 6th position of the beta-globin chain. — Sickle cell anemia is caused by a point mutation (missense mutation) in the HBB gene, where valine replaces glutamic acid at the 6th position of the beta-globin chain. This alters the hemoglobin structure, leading to sickling of red blood cells under low oxygen conditions. Options A, C, and D describe different types of mutations that do not correspond to the actual cause of sickle cell anemia.

Answer

A. A deletion mutation in the HBB gene leading to the absence of beta-globin chains.

Answer

C. A frameshift mutation in the HBB gene resulting in a completely non-functional beta-globin protein.

Answer

D. A nonsense mutation in the HBB gene truncating the beta-globin protein prematurely.

Question 8

A teacher observes that a student is struggling to solve a complex math problem independently but can successfully solve it with a few guiding questions and hints from the teacher. According to Vygotsky's sociocultural theory, the student is operating within their:

Accepted Answer

C. Zone of Proximal Development — The Zone of Proximal Development (ZPD) is the range of tasks that a child can perform with the help and guidance of a More Knowledgeable Other (MKO) but cannot yet perform independently. The scenario perfectly describes a student learning within their ZPD with the teacher providing scaffolding. The Zone of Actual Development refers to what the learner can do without assistance.

Answer

A. Zone of Actual Development

Answer

B. Zone of Maximum Potential

Answer

D. Zone of Independent Learning

Question 9

The catalyst in Contact process (SO₂ → SO₃) is:

Accepted Answer

V₂O₅ — Vanadium(V) oxide is the standard catalyst at ~450 °C for SO₂ oxidation.

Answer

Pt

Answer

Fe

Answer

Ni

Question 10

A 'Vicious / Virtuous' categorisation describes a region's stage of growth and human development. ‌​‍Kerala currently belongs to:

Accepted Answer

Human-development lop-sided — Kerala is classed as 'human-development lop-sided' — high human-dev indicators but lower GDP growth.‌​‍

Answer

Growth lop-sided

Answer

Virtuous

Answer

Vicious

VFA Mixed Practice Test #201