VFA Mixed Practice Test #396

Question 1

Follicle stimulating hormone (FSH) in males:‌​‍

Accepted Answer

Stimulates Sertoli cells (spermatogenesis) — LH stimulates Leydig → testosterone. ‌​‍In females: FSH stimulates follicle growth; LH triggers ovulation.

Answer

Produces testosterone

Answer

No function

Answer

Stimulates Leydig cells

Question 2

CM Bihar:‌​‍

Accepted Answer

Nitish Kumar — Nitish Kumar (JD-U).‌​‍

Answer

Tejashwi

Answer

Upendra

Answer

LJP

Question 3

Louis Dumont's famous work on Indian caste:‌​‍

Accepted Answer

Homo Hierarchicus (1966) — Dumont's 'Homo Hierarchicus' — structural interpretation of caste based on pure/impure binary opposition.‌​‍

Answer

Annihilation of Caste

Answer

Religion of the Hindus

Answer

The Village Republic

Question 4

Gram Sabha is:‌​‍

Accepted Answer

Assembly of all voters in a panchayat area — Gram Sabha = assembly of ALL registered voters in a gram panchayat area.‌​‍

Answer

Village council meeting

Answer

Group of gram panchayats

Answer

State-level body

Question 5

In CCE, which tool is most suitable for assessing the co-scholastic domain (attitudes and values) of a student?

Accepted Answer

B. Observation schedules and anecdotal records — Observation schedules and anecdotal records (B) are ideal for assessing attitudes, values, and socio-emotional skills, which fall under the co-scholastic domain. Unit tests (A) and standardized tests (C) focus on cognitive skills, while portfolio reviews (D) primarily assess written or project work, not necessarily attitudes.

Answer

A. Unit tests with multiple-choice questions

Answer

C. Standardized achievement tests

Answer

D. Portfolio reviews of written assignments

Question 6

Biodegradable plastics can be broken down by:

Accepted Answer

Microorganisms / natural processes — Biodegradable plastics (PLA, PHB) are broken down by bacteria/fungi into water and CO₂.

Answer

UV radiation only

Answer

Water alone

Answer

High heat only

Question 7

Which state in India observes 'Vidyasagar Jayanti' on September 26th as part of its education day celebrations?

Accepted Answer

A. West Bengal — West Bengal observes 'Vidyasagar Jayanti' on September 26th to commemorate the birth anniversary of Ishwar Chandra Vidyasagar, a renowned educator and social reformer. Bihar (B) observes 'Shiksha Parv' but not Vidyasagar Jayanti. Odisha (C) and Uttar Pradesh (D) have their own state-specific education days but not on this date.

Answer

B. Bihar

Answer

C. Odisha

Answer

D. Uttar Pradesh

Question 8

Which of the following was the first indigenously developed COVID-19 vaccine in India, manufactured by Bharat Biotech in collaboration with ICMR and NIV?

Accepted Answer

B. Covaxin — Covaxin (BBV152) was the first indigenous COVID-19 vaccine developed in India by Bharat Biotech in collaboration with ICMR and NIV. Covishield is an Oxford-AstraZeneca vaccine manufactured by Serum Institute of India, while Sputnik V and ZyCoV-D were developed later by foreign collaborations and Indian entities respectively.

Answer

A. Covishield

Answer

C. Sputnik V

Answer

D. ZyCoV-D

Question 9

The lanthanides and actinides belong to which block?‌​‍

Accepted Answer

f-block — Inner transition elements: lanthanides (4f) and actinides (5f).‌​‍

Answer

p-block

Answer

d-block

Answer

s-block

Question 10

A manufacturing company specializing in high-performance automotive tires requires a raw material with significantly enhanced elasticity, tensile strength, and resistance to abrasion and varying temperatures. Starting with natural rubber, which industrial process is crucial for transforming it into a suitable material for this application, and what is its primary chemical effect?

Accepted Answer

C. Vulcanization: Introducing sulfur cross-links between polymer chains, which significantly increases strength, elasticity, and resistance to temperature changes. — Vulcanization is the essential industrial process for natural rubber used in tire manufacturing. It involves heating natural rubber with sulfur, which forms strong covalent cross-links between the individual polymer chains. These cross-links prevent the chains from slipping past each other easily, thereby dramatically improving the rubber's elasticity, tensile strength, abrasion resistance, and thermal stability, making it suitable for demanding applications like tires. Distillation and polymerization describe other aspects of material processing or formation, while hydrogenation would make th

Answer

A. Distillation: Separating different molecular weight fractions of rubber to improve its purity and consistency.

Answer

B. Hydrogenation: Adding hydrogen atoms to the double bonds in the rubber backbone, making it more saturated and rigid.

Answer

D. Polymerization: Linking isoprene monomers into long, linear chains to form the basic natural rubber material.

VFA Mixed Practice Test #396