VFA Mixed Practice Test #824

Question 1

The bond in N₂ molecule is a:

Accepted Answer

Triple bond — N≡N has a very strong triple bond (945 kJ/mol).

Answer

Single bond

Answer

Double bond

Answer

Ionic bond

Question 2

A traditional herbal preparation for hypertension contains dried roots of *Rauwolfia serpentina*. Which specific alkaloid from this plant is primarily responsible for its antihypertensive and tranquilizing effects by depleting catecholamines and serotonin from nerve endings?

Accepted Answer

C. Reserpine — Reserpine is the main indole alkaloid isolated from *Rauwolfia serpentina* that exhibits significant antihypertensive and tranquilizing properties. It acts by irreversibly blocking the vesicular monoamine transporter (VMAT), leading to depletion of norepinephrine, dopamine, and serotonin. Atropine, Morphine, and Quinine are alkaloids from different plant sources with distinct pharmacological actions.

Answer

A. Atropine

Answer

B. Morphine

Answer

D. Quinine

Question 3

Largest desert in the world:‌​‍

Accepted Answer

Antarctic (cold desert) — ~14 million km². ‌​‍Sahara is largest hot desert (~9.2 million km²). Desert = <250 mm/year precipitation.

Answer

Sahara

Answer

Arabian

Answer

Gobi

Question 4

Kerala assembly speaker (current, 2026):‌​‍

Accepted Answer

A.N. Shamseer — A.N. Shamseer since 2022.‌​‍

Answer

P. Sreeramakrishnan

Answer

G. Karthikeyan

Answer

M. Vijayakumar

Question 5

ELISA is used to detect:

Accepted Answer

Antigen or antibody (immunoassay) — Enzyme-Linked Immunosorbent Assay. HIV test, pregnancy test. Colour change indicates presence.

Answer

DNA

Answer

Enzymes

Answer

Salts

Question 6

Nehru Trophy Boat Race:‌​‍

Accepted Answer

Punnamada Lake — Punnamada Lake, Alappuzha.‌​‍

Answer

Vembanad

Answer

Ashtamudi

Answer

Sasthamkotta

Question 7

Excess GH in adults:‌​‍

Accepted Answer

Acromegaly — Acromegaly — enlarged hands, jaw.‌​‍

Answer

Gigantism

Answer

None

Answer

Both

Question 8

Patturumal — Cherussery poet:‌​‍

Accepted Answer

Krishnagatha author — Cherussery Krishna's Krishnagatha.‌​‍

Answer

Mahabharat

Answer

Ramayanam

Answer

Meghadoot

Question 9

Furosemide, a potent loop diuretic, primarily exerts its effect by inhibiting the reabsorption of which ions in the kidney?

Accepted Answer

B. Sodium and chloride in the ascending limb of the loop of Henle. — Furosemide acts by inhibiting the Na+/K+/2Cl- cotransporter in the thick ascending limb of the loop of Henle. This action prevents the reabsorption of these ions, leading to a significant increase in water and electrolyte excretion, characteristic of loop diuretics and their potent diuretic effect.

Answer

A. Sodium and chloride in the proximal tubule.

Answer

C. Potassium and hydrogen in the collecting duct.

Answer

D. Bicarbonate in the distal convoluted tubule.

Question 10

What was the original name of Thycaud Ayya?

Accepted Answer

Subbarayan — Subbarayan was the original name of Thycaud Ayya Swami.

Answer

Kunjikannan

Answer

Mudisoodum Perumal

Answer

Muthukutty

VFA Mixed Practice Test #824