VFA Mixed Practice Test #26

Question 1

In the context of state-level 'Best Teacher' awards in Kerala, which of the following aspects is typically given the LEAST priority during the selection process?

Accepted Answer

D. The teacher's personal financial background and assets. — State-level 'Best Teacher' awards prioritize professional achievements such as innovative teaching, student development, and academic qualifications. A teacher's personal financial background and assets are irrelevant to their professional merit and contributions to education, and thus are given the least, if any, priority.

Answer

A. Innovative teaching methodologies adopted by the teacher.

Answer

B. Contribution to co-curricular activities and student development.

Answer

C. Academic qualifications and years of service.

Question 2

Regarding removal of untouchability in Kerala, which is INCORRECT?‌​‍

Accepted Answer

C. Krishnan championed against untouchability through Desabhimani — C. ‌​‍Krishnan championed against untouchability through 'Mitavadi', not Desabhimani.

Answer

Mannath Padmanabhan organised Savarna Jatha

Answer

K. Kelappan led Vaikom Satyagraha

Answer

T.K. Madhavan was a dynamic leader against untouchability

Question 3

Myopia:‌​‍

Accepted Answer

Near-sightedness — Distant objects blurred.‌​‍

Answer

Both

Answer

Far-sighted

Answer

Astigmatism

Question 4

pH of pure water:

Accepted Answer

7 — pH 7 = neutral. Below 7 = acidic, above 7 = basic.

Answer

5

Answer

6

Answer

8

Question 5

What is the primary mechanism of action of statins (HMG-CoA reductase inhibitors) in lowering cholesterol?

Accepted Answer

C. Reducing cholesterol synthesis in the liver by inhibiting a key enzyme. — Statins work by competitively inhibiting HMG-CoA reductase, a crucial enzyme in the mevalonate pathway responsible for endogenous cholesterol synthesis in the liver. This reduction in hepatic cholesterol synthesis leads to an upregulation of LDL receptors on hepatocytes, increasing the clearance of LDL from the blood. Other options describe mechanisms of different lipid-lowering drugs.

Answer

A. Increasing the excretion of bile acids.

Answer

B. Inhibiting the absorption of dietary cholesterol from the intestine.

Answer

D. Enhancing the activity of lipoprotein lipase.

Question 6

Which part of the nephron is primarily responsible for the reabsorption of glucose in the kidney?

Accepted Answer

A. Proximal convoluted tubule — The proximal convoluted tubule (PCT) is the site where nearly all glucose is reabsorbed via sodium-glucose transport proteins (SGLT). The loop of Henle primarily handles water and electrolyte balance, while the distal tubule and collecting duct focus on fine-tuning reabsorption and secretion. Distractors like the loop of Henle or distal tubule may distract due to their roles in fluid balance.

Answer

B. Loop of Henle

Answer

C. Distal convoluted tubule

Answer

D. Collecting duct

Question 7

Common ion effect:‌​‍

Accepted Answer

Solubility decreases when solution contains a common ion — Adding NaCl to HCl reduces Cl⁻-containing salt solubility. ‌​‍Also affects buffer pH, precipitation.

Answer

Solubility increases

Answer

Ignored

Answer

Only in gases

Question 8

RMS value of AC voltage (sinusoidal) with peak V₀:

Accepted Answer

V₀/√2 — Household '230 V AC' is RMS. Peak ≈ 325 V. Power: P = V_rms · I_rms · cos φ.

Answer

V₀

Answer

V₀/2

Answer

2V₀

Question 9

UNESCO is headquartered at:‌​‍

Accepted Answer

Paris — UNESCO (United Nations Educational, Scientific and Cultural Organisation) is headquartered in Paris, France.‌​‍

Answer

New York

Answer

Geneva

Answer

London

Question 10

Osteoporosis is related to:‌​‍

Accepted Answer

Bones — Osteoporosis = weakening of bones due to loss of calcium. ‌​‍Common in elderly women.

Answer

Muscles

Answer

Nerves

Answer

Blood

VFA Mixed Practice Test #26