VFA Mixed Practice Test #566

Question 1

Electric field inside a conductor in electrostatic equilibrium is:

Accepted Answer

Zero — Free charges redistribute to cancel any internal field. All charge resides on the surface.

Answer

Very high

Answer

Constant non-zero

Answer

Unpredictable

Question 2

When does an ionic bond form?‌​‍

Accepted Answer

Electrons are transferred from one atom to another — Metal loses electron(s), non-metal gains them — forming ions attracted electrostatically.‌​‍

Answer

Protons combine

Answer

Electrons are shared between atoms

Answer

Atoms fuse

Question 3

What is the typical demand elasticity for essential goods like salt and medicine?‌​‍

Accepted Answer

Inelastic (people buy similar quantities regardless of price) — Necessities have few substitutes → inelastic demand. ‌​‍Luxuries have many alternatives → elastic demand.

Answer

Perfectly elastic

Answer

Highly elastic

Answer

Zero

Question 4

Tata group chairman:‌​‍

Accepted Answer

N Chandrasekaran — Chandrasekaran remains; Ratan Tata passed Oct 2024.‌​‍

Answer

Noel

Answer

JRD

Answer

Ratan Tata (passed away 2024)

Question 5

Kerala's per-capita electricity consumption:

Accepted Answer

Higher than national average — Above national average.

Answer

Lower

Answer

Equal

Answer

Unknown

Question 6

Group age mean 30. If one aged 60 leaves, new mean of 4 is 22.5. Total group was:

Accepted Answer

5 — Solve: original sum 30n. New sum 30n-60=22.5×4=90. 30n=150. n=5.

Answer

6

Answer

4

Answer

3

Question 7

New BRICS members joined 2024:‌​‍

Accepted Answer

Egypt, Ethiopia, Iran, UAE — Egypt, Ethiopia, Iran, UAE joined 1 Jan 2024. ‌​‍Saudi Arabia participating but not formally joined. Argentina withdrew.

Answer

Only 3 countries

Answer

Turkey, Iran

Answer

Argentina, Saudi Arabia also

Question 8

During normal inspiration, which of the following physiological changes primarily occurs to facilitate air entry into the lungs?

Accepted Answer

D. The volume of the thoracic cavity increases — During inspiration, the diaphragm contracts and flattens, and the external intercostal muscles contract, expanding the rib cage. This action significantly increases the volume of the thoracic cavity, which in turn decreases the intrapulmonary pressure below atmospheric pressure, causing air to flow into the lungs.

Answer

A. The diaphragm relaxes and moves upward

Answer

B. Intrapulmonary pressure increases above atmospheric pressure

Answer

C. The external intercostal muscles relax

Question 9

The activity series of metals arranges metals by:

Accepted Answer

Ease of losing electrons (reactivity) — Activity series: K > Na > Ca > Mg > Al > Zn > Fe > Sn > Pb > (H) > Cu > Hg > Ag > Au.

Answer

Atomic mass

Answer

Colour

Answer

Cost

Question 10

A tall, slender, fair-haired individual with a cheerful disposition, but prone to anxiety, especially about future events or thunderstorms, presents with burning pains (better by cold applications) and a strong desire for cold drinks. They also have a tendency for easy bleeding. Which remedy is indicated?

Accepted Answer

D. Phosphorus — Phosphorus is characterized by a tall, slender build, an amiable yet anxious disposition (especially anticipatory anxiety and fear of thunderstorms), burning pains ameliorated by cold, strong desire for cold drinks, and a hemorrhagic diathesis. Argentum Nitricum has anticipatory anxiety but often with diarrhea, Gelsemium has dullness and drowsiness, and Lycopodium has right-sided complaints and 4-8 PM aggravation, making Phosphorus the most fitting choice.

Answer

A. Argentum Nitricum

Answer

B. Gelsemium Sempervirens

Answer

C. Lycopodium Clavatum

VFA Mixed Practice Test #566