Plus 2 Lecturer Mixed Practice Test #210

Question 1

∫sin x dx =‌​‍

Accepted Answer

-cos x + C — ∫cos x dx = sin x + C. Sign flip from derivative direction.‌​‍

Answer

cos x + C

Answer

-sin x

Answer

sin x

Question 2

Ms. Devi, a high school teacher, observes that her students struggle with critical thinking in history lessons. She decides to initiate an action research project. What would be the MOST appropriate first step for Ms. Devi to take immediately after identifying this problem?

Accepted Answer

B. Collect data on current student performance in critical thinking through observations, surveys, or assignments. — After identifying a problem, the first crucial step in action research is to gather relevant data to understand the problem in depth and establish a baseline. This data collection (Option B) helps to confirm the problem's existence, identify its scope, and inform the subsequent planning of interventions. While reviewing literature (Option C) is valuable, it typically follows initial data collection or problem refinement, and immediately implementing a solution (Option A) or designing a formal experimental study (Option D) bypasses the investigative phase central to action research.

Answer

A. Immediately introduce a new textbook chapter on critical thinking skills.

Answer

C. Review existing academic literature on critical thinking strategies in history education.

Answer

D. Formulate a hypothesis about the causes of poor critical thinking and design an experimental study.

Question 3

International Solar Alliance (ISA) was launched by India-France in:‌​‍

Accepted Answer

2015 (COP21 Paris) — ISA launched by PM Modi + French President Hollande at COP21. ‌​‍HQ: Gurugram. 120+ member countries. ‌​‍Aim: scale up solar energy.

Answer

Not yet

Answer

2012

Answer

2020

Question 4

Synonym of DELETERIOUS:

Accepted Answer

Harmful — Causing harm.

Answer

Beneficial

Answer

Neutral

Answer

Useless

Question 5

What is PM GatiShakti?‌​‍

Accepted Answer

Infrastructure master plan — National Master Plan for multi-modal connectivity and infrastructure planning.‌​‍

Answer

Highway project

Answer

Smart city project

Answer

Sports scheme

Question 6

The non-metal that is liquid at room temperature is:‌​‍

Accepted Answer

Bromine — Bromine is the only non-metal liquid at room temperature. ‌​‍Mercury is the only liquid metal.

Answer

Mercury

Answer

Iodine

Answer

Phosphorus

Question 7

Which of the following has the highest specific heat capacity?

Accepted Answer

Water — Water's specific heat (4.186 kJ/kg·K) is exceptionally high — regulates climate.

Answer

Iron

Answer

Copper

Answer

Mercury

Question 8

Conservation of mechanical energy applies when:‌​‍

Accepted Answer

Only conservative forces do work — KE + PE = constant when non-conservative forces (friction, air drag) do no work.‌​‍

Answer

Collisions

Answer

Always

Answer

Friction present

Question 9

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 10

Largest animal phylum is:‌​‍

Accepted Answer

Arthropoda — ~75% of animal species. ‌​‍Jointed legs, exoskeleton of chitin. Insects, crustaceans, arachnids.

Answer

Mollusca

Answer

Chordata

Answer

Annelida

Plus 2 Lecturer Mixed Practice Test #210