VFA Mixed Practice Test #257

Question 1

The functional group of an alcohol is:

Accepted Answer

−OH — −OH (hydroxyl) is the functional group of alcohols (e.g., methanol CH₃OH).

Answer

−COOH

Answer

−CHO

Answer

−NH₂

Question 2

Iguazu Falls between:‌​‍

Accepted Answer

Argentina-Brazil — Argentina-Brazil border.‌​‍

Answer

Brazil-Paraguay

Answer

Peru-Chile

Answer

Colombia-Venezuela

Question 3

Gir National Park is the only habitat of:‌​‍

Accepted Answer

Asiatic Lion — Gir National Park in Gujarat is the only natural habitat of the Asiatic Lion.‌​‍

Answer

Indian Bison

Answer

Royal Bengal Tiger

Answer

Indian Leopard

Question 4

How many odd days in a normal year?‌​‍

Accepted Answer

1 — 365 ÷ 7 = 52 weeks + 1 day. So 1 odd day.‌​‍

Answer

0

Answer

2

Answer

3

Question 5

Grignard reagent:

Accepted Answer

CH₃MgBr (organomagnesium halide) — RMgX + carbonyl compounds → alcohols after acidic workup. Discovered 1900; Nobel 1912.

Answer

NaOH

Answer

RCOOH

Answer

Only alcohol

Question 6

Coulomb's law force between two point charges varies as:

Accepted Answer

1/r² — F = kq₁q₂/r². k = 1/(4πε₀) = 9 × 10⁹ N·m²/C². Valid in vacuum; medium reduces by dielectric constant.

Answer

1/r

Answer

1/r³

Answer

r

Question 7

Vishukkani is associated with:‌​‍

Accepted Answer

Vishu — Vishukkani = the auspicious arrangement seen first thing on Vishu morning (Malayalam New Year).‌​‍

Answer

Onam

Answer

Thrissur Pooram

Answer

Theyyam

Question 8

Which is the major religion in Japan practiced by more than 50% of the people?

Accepted Answer

Shintoism — Shintoism is Japan's indigenous religion (often co-practiced with Buddhism).

Answer

Maoism

Answer

Taoism

Answer

Buddhism

Question 9

Recently discovered element source in India crucial for electric vehicles:‌​‍

Accepted Answer

Lithium — Major lithium deposits were discovered in Reasi district of Jammu & Kashmir in 2023.‌​‍

Answer

Graphite

Answer

Cobalt

Answer

Uranium

Question 10

A teacher conducts action research to improve student participation in discussions. After analyzing the data, they find that students are more engaged when using small-group activities instead of whole-class lectures. What should be the NEXT step in the action research cycle?

Accepted Answer

B. Modify the strategy based on feedback and repeat the cycle with new data collection — Action research is iterative; after analyzing results, the teacher should refine the strategy (e.g., based on feedback) and repeat the cycle (B). Testing in another class (A) is helpful but secondary to refining the approach. Publishing (C) or discontinuing (D) is premature at this stage.

Answer

A. Implement the small-group strategy in another class to test generalizability

Answer

C. Publish the findings in a teaching journal to share with the wider community

Answer

D. Discontinue the action research as the problem is solved

VFA Mixed Practice Test #257