VFA Mixed Practice Test #543

Question 1

During gas exchange in the lungs, oxygen moves from the alveoli into the pulmonary capillaries primarily due to which of the following principles?

Accepted Answer

C. Diffusion down its partial pressure gradient. — Gas exchange in the lungs, including the movement of oxygen from alveoli to capillaries, occurs primarily by simple diffusion. This process is driven by the difference in the partial pressure of oxygen between the alveoli (higher) and the pulmonary capillaries (lower). Active transport and facilitated diffusion are typically for solutes, and osmosis is for water movement.

Answer

A. Active transport against a concentration gradient.

Answer

B. Facilitated diffusion through protein channels.

Answer

D. Osmosis across the alveolar-capillary membrane.

Question 2

The Indian rupee symbol (₹) was adopted in:‌​‍

Accepted Answer

2010 — ₹ designed by Udaya Kumar Dharmalingam, adopted on 15 July 2010.‌​‍

Answer

2016

Answer

2014

Answer

2005

Question 3

Kerala GSDP rank (approx):

Accepted Answer

Top 10 — Among top 10 states by GSDP.

Answer

Top 5

Answer

10-15

Answer

Bottom

Question 4

Drift velocity of electrons in a conductor:

Accepted Answer

~10⁻⁴ m/s (very slow) — Despite slow drift, signal propagates near c because all electrons respond together. I = neAvd.

Answer

~10⁸ m/s (speed of light)

Answer

~10⁶

Answer

Zero

Question 5

The most malleable and ductile metal is:

Accepted Answer

Gold — Gold is the most malleable and ductile metal — 1 g can be beaten into ~1 m² leaf.

Answer

Iron

Answer

Aluminium

Answer

Copper

Question 6

Munnar in Kerala is famous for:‌​‍

Accepted Answer

Tea plantations — Munnar in Idukki district is Kerala's most famous tea-producing region with vast estates at 1,500-2,000m elevation.‌​‍

Answer

Spice gardens

Answer

Rubber estates

Answer

Coffee plantations

Question 7

Indirect: He said to me, 'Please help me.'‌​‍

Accepted Answer

He requested me to help him — 'Please' = request. He requested me to help him.‌​‍

Answer

He ordered me to help him

Answer

He told me to help him

Answer

He asked me that help him

Question 8

The National Education Policy 2020 strongly advocates for mother tongue/local language as the medium of instruction. Up to which grade level is this ideally recommended?

Accepted Answer

C. Grade 5 — The NEP 2020 recommends that the medium of instruction until at least Grade 5, but preferably till Grade 8 and beyond, should be the home language/mother tongue/local language/regional language. This policy aims to improve learning outcomes and make education more accessible and engaging for young children. Options A, B, and D are incorrect as the policy explicitly states 'at least till Grade 5'.

Answer

A. Grade 2

Answer

B. Grade 3

Answer

D. Grade 8

Question 9

Nucleus discovered by:

Accepted Answer

Robert Brown — Robert Brown (1831).

Answer

Hooke

Answer

Leeuwenhoek

Answer

Virchow

Question 10

Rusting of iron is a:‌​‍

Accepted Answer

Chemical change — Rust (Fe₂O₃·xH₂O) is a new substance → chemical change.‌​‍

Answer

Physical change

Answer

Nuclear change

Answer

No change

VFA Mixed Practice Test #543