NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 1473 - 1480 of 1998

Choose Programs:

🎯 1998 MCQs (& PYQs) with Full Explanations (2024-2025 Exam)

Rs. 550.00 -OR-

3 Year Validity (Multiple Devices)

CoverageDetailsSample Explanation

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

Question 1473

Question MCQ▾

grams of water contains ________ moles

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 1474

Question MCQ▾

A sound source is having a frequency . Calculate numbers of vibration in a minute.

Choices

Choice (4)Response

a.

14400

b.

40

c.

240

d.

None of the above

Edit

Question 1475

Question MCQ▾

The causative agent for malaria is

Choices

Choice (4)Response

a.

Amoeba

b.

Plasmodium

c.

Taenia solium

d.

Ascaris

Edit

Question 1476

Question MCQ▾

Let force is applied on an object of mass and after increment in its speed, its speed becomes in . Then its initial velocity is:

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 1477

Question MCQ▾

The speed of sound is maximum in:

Choices

Choice (4)Response

a.

Same for all matters.

b.

Liquid

c.

Gas

d.

Solid

Edit

Question 1478

Question MCQ▾

If a speed of a sound is and its wavelength is , then the sound is:

Choices

Choice (4)Response

a.

Audible

b.

Supersonic

c.

Infrasonic

d.

Ultrasonic

Edit

Question 1479

Question MCQ▾

Ultrasonic wave are used for detecting object under the water. What technique/device is used for this?

Choices

Choice (4)Response

a.

Phacoemulsification.

b.

Ultrasonography

c.

Sound Navigation and Ranging.

d.

Echocardiography

Edit

Question 1480

Question MCQ▾

A gold statue contains of gold and the rest copper. How many atoms of gold are present in one gram of this statue of gold?

Choices

Choice (4)Response

a.

b.

c.

d.

Edit