VFA Mixed Practice Test #92

Question 1

World Water Day is on:‌​‍

Accepted Answer

22 March — 22 March = World Water Day. 22 April = Earth Day. 5 June = Environment Day.‌​‍

Answer

22 April

Answer

5 June

Answer

16 September

Question 2

Osama Bin Laden was killed by US forces in:‌​‍

Accepted Answer

2011 (Abbottabad, Pakistan) — Operation Neptune Spear: US Navy SEALs killed OBL in Abbottabad, Pakistan, 2 May 2011 under President Obama.‌​‍

Answer

2003

Answer

2001

Answer

2014

Question 3

India's desertification area:‌​‍

Accepted Answer

~97 million hectares — ISRO 2016 report.‌​‍

Answer

10 million

Answer

50 million

Answer

200 million

Question 4

Social stratification means:‌​‍

Accepted Answer

Hierarchical organisation of society into layers based on wealth, power, prestige — Stratification systems: caste (closed), class (open), estate (feudal), slavery. ‌​‍Max Weber identified 3 dimensions: class (economic), status (prestige), party (political).

Answer

Classification of rocks

Answer

Population count

Answer

Economic growth

Question 5

Cuban Missile Crisis (October 1962) was a stand-off between:‌​‍

Accepted Answer

US and USSR over Soviet nuclear missiles in Cuba — 13 days of intense crisis. ‌​‍JFK imposed naval quarantine. Khrushchev withdrew missiles in exchange for secret US removal of Jupiter missiles from Turkey.

Answer

US and China

Answer

USSR and China

Answer

US and Cuba

Question 6

DPT covers:‌​‍

Accepted Answer

Diphtheria, Pertussis, Tetanus — Three diseases.‌​‍

Answer

Polio

Answer

Measles

Answer

TB

Question 7

Current electricity requires:‌​‍

Accepted Answer

Complete circuit with EMF source — EMF = energy per unit charge imparted by source. ‌​‍Terminal voltage = EMF - Ir (internal resistance drop).

Answer

Only voltage

Answer

Only resistance

Answer

Just wire

Question 8

A doctor who treats diseases of the ear, nose and throat is called:

Accepted Answer

ENT specialist / Otolaryngologist — Otolaryngologist (ENT) treats Ear, Nose and Throat disorders.

Answer

Paediatrician

Answer

Cardiologist

Answer

Dermatologist

Question 9

During a Gram staining procedure, a microbiologist observes purple-colored, rod-shaped bacteria under the microscope. Based on this observation, how would these bacteria be classified?

Accepted Answer

C. Gram-positive bacilli. — Gram-positive bacteria retain the crystal violet stain due to their thick peptidoglycan layer, appearing purple under the microscope. Rod-shaped bacteria are referred to as bacilli. Therefore, purple, rod-shaped bacteria are classified as Gram-positive bacilli. Gram-negative bacteria would appear pink or red, and cocci are spherical, not rod-shaped.

Answer

A. Gram-positive cocci.

Answer

B. Gram-negative bacilli.

Answer

D. Gram-negative cocci.

Question 10

Rust is:‌​‍

Accepted Answer

Iron oxide — Fe₂O₃·xH₂O — hydrated iron(III) oxide.‌​‍

Answer

Iron carbonate

Answer

Iron sulphide

Answer

Iron chloride

VFA Mixed Practice Test #92