Chemistry [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 64 - 70 of 208

Access detailed explanations (illustrated with images and videos) to 2000 questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. Unlimited Access & Unlimited Time!

View Sample Explanation or View Features.

Rs. 550.00 -OR-

How to register? Already Subscribed?

Question 64

Edit

Question

MCQ▾

Milk is an example of ________ type of emulsion.

Choices

Choice (4)Response

a.

Oil in oil

b.

Water in water

c.

Oil in water

d.

Water in oil

Question 65

Edit

Question

MCQ▾

Activated charcoal acts as ________ during the adsorption of oxalic acid by activated charcoal.

Choices

Choice (4)Response

a.

Ascorbate

b.

Adsorbate

c.

Adsorbent

d.

Adsorber

Question 66

Edit

Question

MCQ▾

Which of the following can absorb large volume of hydrogen gas?

Choices

Choice (4)Response

a.

Finely divided platinum

b.

Colloidal ferric hydroxide

c.

Colloidal solution of palladium

d.

Finely divided nickel

Question 67

Edit

Question

MCQ▾

Which of the following is not colloid?

Choices

Choice (4)Response

a.

Ice cream

b.

Blood

c.

Milk

d.

Sugar solution

Question 68

Edit

Question

MCQ▾

The Brownian movement is due to ________.

Choices

Choice (4)Response

a.

Attraction and repulsion between charges on the colloidal particles

b.

Temperature fluctuation within the liquid phase

c.

Impact of the molecules of the dispersion medium on the colloidal particles.

d.

None of the above

Question 69

Edit

Question

MCQ▾

Which one of the following does not show Tyndall effect?

Choices

Choice (4)Response

a.

Milk

b.

Blood

c.

Sugar solution

d.

Emulsion

Question 70

Edit

Question

MCQ▾

What do we observe when colloidal solution is observed under ultramicroscope?

Choices

Choice (4)Response

a.

Light scattered by colloidal particles

b.

Size of colloidal particles

c.

Shape of colloidal particles

d.

Relative size of colloidal particles