LGS Mixed Practice Test #352

Question 1

In a constructivist classroom using the 5E model, students are asked to design an experiment to test the effectiveness of different antiseptics on bacterial growth. Which phase of the 5E model does this activity primarily represent?

Accepted Answer

C. Explore — The 'Elaborate' phase involves applying knowledge to new contexts or extending understanding through open-ended tasks. Designing an experiment (Option B) demonstrates higher-order thinking and application, which aligns with this phase. The 'Explore' phase would involve hands-on activities without the complexity of designing a full experiment.

Answer

A. Explain

Answer

B. Elaborate

Answer

D. Evaluate

Question 2

The percentage of oxygen in dry atmospheric air is approximately:‌​‍

Accepted Answer

21% — Atmospheric O₂ ≈ 20.95%.‌​‍

Answer

78%

Answer

32%

Answer

10%

Question 3

Dispersion in prism occurs because:

Accepted Answer

Different wavelengths have different refractive indices — Violet bends most (highest n), red least. Forms spectrum. Rainbows: droplet dispersion + internal reflection.

Answer

Prism refracts light

Answer

Colour changes

Answer

Interference

Question 4

The newspaper Al-Ameen was started by:‌​‍

Accepted Answer

Muhammad Abdul Rahman Sahib — Muhammad Abdul Rahman Sahib launched Al-Ameen (1924) in Kozhikode.‌​‍

Answer

Maulana Abul Kalam Azad

Answer

Maulana Shaukat Ali

Answer

Vakkam Abdul Khader Moulavi

Question 5

Five kingdoms:

Accepted Answer

Monera, Protista, Fungi, Plantae, Animalia — Five-kingdom system.

Answer

Plants and Animals

Answer

Three kingdoms

Answer

Six kingdoms

Question 6

Polygamy means marriage to multiple spouses. Polygyny is:‌​‍

Accepted Answer

One man, multiple wives — Polygyny (1 man + multiple wives) more common historically. ‌​‍Polyandry (1 woman + multiple husbands) rare — e.g., Toda, some Himalayan communities.

Answer

Group marriage

Answer

Polyandry

Answer

Monogamy

Question 7

The 'Dhanwantari Award' is a prestigious award presented in India to individuals for their significant contributions in which of the following fields?

Accepted Answer

C. Medical Sciences and Healthcare — The Dhanwantari Award is a prestigious recognition in India specifically dedicated to honouring individuals who have made significant and lasting contributions to the fields of medical sciences and healthcare. Named after Dhanwantari, the Hindu God of medicine, it acknowledges excellence in clinical practice, research, and public health, distinguishing it from awards in sports, literature, or environmental conservation.

Answer

A. Sports and Athletics

Answer

B. Literature and Arts

Answer

D. Environmental Conservation

Question 8

In a microteaching session on 'introducing a lesson,' a teacher demonstrates poor eye contact and speaks too fast. Which feedback point addresses the most fundamental skill deficit?

Accepted Answer

C. 'Maintain consistent eye contact with students.' — Eye contact (C) is fundamental for engagement and non-verbal communication. While pacing (B) is critical, poor eye contact directly impacts the teacher’s ability to connect with students. Gestures (A) and summaries (D) are secondary skills.

Answer

A. 'Use more gestures to emphasize key points.'

Answer

B. 'Speak at a moderate pace to ensure comprehension.'

Answer

D. 'Include a summary of the lesson at the end.'

Question 9

Greenhouse effect is:‌​‍

Accepted Answer

Natural warming by atmosphere (required for life) — Without it, Earth ~33°C colder. Enhanced by human CO₂ etc. → climate change.‌​‍

Answer

Rain

Answer

Cooling

Answer

Only human-caused

Question 10

A mole of any substance contains how many particles (Avogadro's number)?

Accepted Answer

6.022 × 10²³ — N_A = 6.022 × 10²³ particles/mol (atoms, molecules or ions).

Answer

6.022 × 10²²

Answer

6.022 × 10²⁴

Answer

10⁶

LGS Mixed Practice Test #352