Physics [NSTSE (National Science Talent Search Exam- Unified Council) Class 7]: Questions 46 - 51 of 191

Choose Programs:

📹 Video Course 2024 (19 Lectures [8 hrs : 3 mins]): Offline Support

Rs. 100.00 -OR-

1 Month Validity (Multiple Devices)

Preview All LecturesDetails

🎓 Study Material (33 Notes): 2024-2025 Syllabus

Rs. 100.00 -OR-

3 Year Validity (Multiple Devices)

Topic-wise Notes & SampleDetails

🎯 1732 MCQs (& PYQs) with Full Explanations (2024-2025 Exam)

Rs. 500.00 -OR-

3 Year Validity (Multiple Devices)

CoverageDetailsSample Explanation

Help me Choose & Register (Watch Video) Already Subscribed?

Question 46

Question MCQ▾

The initial and the final velocity of a car was 0 km/hr and 90 km/hr. Find the acceleration of the car if the time taken was 10 seconds.

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 47

Question MCQ▾

Why sand is used as a fire extinguisher to prevent small fires?

Figure Showing Bucket Filled with Sand

Choices

Choice (4)Response

a.

Because sand is cheap.

b.

Because sand cover up all oxygen from the fire.

c.

Because sand is easily available

d.

All a., b. and c. are correct

Edit

Question 48

Question MCQ▾

Which of the following is bad conductor of heat?

Choices

Choice (4)Response

a.

Gold

Figure Showing Gold

b.

Mercury

Figure Showing Mercury Metal

c.

Glass

Figure Showing Glass Surface

d.

Silver

Figure Showing Silver

Edit

Question 49

Question MCQ▾

A pendulum of a clock takes 45 seconds to complete 15 oscillations, calculate its time period.

Figure Showing Pendulum of a Clock

Choices

Choice (4)Response

a.

4 sec

b.

9 sec

c.

3 sec

d.

6 sec

Edit

Question 50

Question MCQ▾

In a village all the rivers and lakes got dried up in summer, this process can be called as:

Choices

Choice (4)Response

a.

Evaporation

b.

Sublimation

c.

Condensation

d.

Melting

Edit

Question 51

Question MCQ▾

For very high temperature range, which type of thermometers can be used?

Choices

Choice (4)Response

a.

Galileo thermometers

b.

Water thermometers

c.

Mercury Thermometers

d.

Question does not provide sufficient data or is vague

Edit