VFA Mixed Practice Test #627

Question 1

The slogan 'Educate, Organise, Agitate' in Kerala reform discourse is most associated with:

Accepted Answer

Ambedkar (adopted by Kerala Dalit movements) — B. R. Ambedkar's slogan 'Educate, Organise, Agitate' was embraced by Kerala's Dalit movement.

Answer

Sree Narayana Guru

Answer

Ayyankali

Answer

Mannathu Padmanabhan

Question 2

Which gas is essential for combustion?‌​‍

Accepted Answer

Oxygen — Oxygen supports combustion; other gases extinguish flames.‌​‍

Answer

Hydrogen

Answer

Nitrogen

Answer

Carbon dioxide

Question 3

Kerala Police:

Accepted Answer

State Police — State police force.

Answer

Central

Answer

Union

Answer

Private

Question 4

The Guruvayur Satyagraha (1931-32) was led by:

Accepted Answer

K. Kelappan — K. Kelappan, known as Kerala Gandhi, led the Guruvayur temple entry satyagraha.

Answer

A. K. Gopalan

Answer

T. K. Madhavan

Answer

Mannath Padmanabhan

Question 5

Periyar dam Mullaperiyar — operated by:

Accepted Answer

TN — Tamil Nadu (per 999-year lease).

Answer

Kerala

Answer

Joint

Answer

Centre

Question 6

Which of the following is an example of a formative assessment tool?

Accepted Answer

B. Mid-term classroom quiz with feedback. — Formative assessments are ongoing and provide feedback during the learning process. A mid-term quiz (B) fits this definition, whereas final exams (A), board exams (C), and annual reports (D) are summative in nature.

Answer

A. Final term examination.

Answer

C. State-level board examination.

Answer

D. Annual school performance report.

Question 7

Number of ribs in the human body is:‌​‍

Accepted Answer

12 pairs — 12 pairs of ribs: 7 true, 3 false, 2 floating.‌​‍

Answer

14 pairs

Answer

11 pairs

Answer

10 pairs

Question 8

Which of the following polymers is synthesized through an addition polymerization process and is used extensively in the manufacture of non-stick cookware coatings?

Accepted Answer

B. Polytetrafluoroethylene (PTFE) — Polytetrafluoroethylene (PTFE) is produced via addition polymerization of tetrafluoroethylene monomers and is renowned for its non-stick properties due to the strong carbon-fluorine bonds. PET is a condensation polymer, PVC and polycarbonate are used in different applications not primarily for non-stick coatings.

Answer

A. Polyethylene terephthalate (PET)

Answer

C. Polyvinyl chloride (PVC)

Answer

D. Polycarbonate (PC)

Question 9

A couple approaches a genetic counselor concerned about the risk of their future child inheriting a rare autosomal recessive disorder. The father's genetic testing reveals he is a carrier (heterozygous) for the disorder, while the mother's test shows she is not a carrier (homozygous dominant). Based on Mendelian inheritance principles, what is the probability that their child will be a carrier for this specific recessive disorder?

Accepted Answer

C. 50% — The father has a genotype of Aa (carrier) and the mother has AA (non-carrier). A Punnett square analysis shows that 50% of their offspring will inherit an 'A' allele from the mother and an 'a' allele from the father, resulting in a heterozygous (Aa) genotype, making them carriers. The other 50% will be AA (non-carriers), and there is no chance for the child to inherit the disorder (aa) as the mother does not carry the recessive allele.

Answer

A. 0%

Answer

B. 25%

Answer

D. 75%

Question 10

Raoult's law for ideal solutions:‌​‍

Accepted Answer

P_total = xA·P°A + xB·P°B — Mole fraction × pure vapour pressure. ‌​‍Ideal solution: ΔH_mix=0, ΔV_mix=0. Examples: benzene+toluene.

Answer

P = xR

Answer

Only for non-volatile

Answer

Deviates always

VFA Mixed Practice Test #627