Question 4

Boojho found a bag containing the following materials:

(i) Mirror

(ii) Paper stained with oil

(iii) Magnet

(iv) Glass spectacles

Help Boojho in finding out the material(s) which is/are opaque.

(a) Only (i) (b) Only (iv) (c) (i) and (iii) (d) (i) and (iv)

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Solution

Mirror and magnet are opaque materials because we cannot see through these materials. Paper stained with oil is translucent material (through which we can see partially) and glass spectacles are transparent. So, option (c) is the correct answer.

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Similar questions

Q. Boojho found a bag containing the following materials

(i) Mirror
(ii) PaPer stained with oil
(iii) Magnet
(iv) Glass spectacles

Help Boojho in finding out the material(s) which is/are opaque.

You are provided with the following materials:

(i) Magnifying glass

(ii) Mirror

(iii) Stainless steel plate

(iv) Glass tumbler

Which of the above materials will you identify as transparent?

(a) (i) and (ii) (b) (i) and (iii) (c) (i) and (iv) (d) (iii) and (iv)

Question 12
In the following groups of materials, which group(s) contains only non-biodegradable items?
(i) Wood, paper, leather
(ii) Polythene, detergent, PVC
(iii) Plastic, detergent, grass
(iv) Plastic, bakelite, DDT

(a) (iii)
(b) (iv)
(c) (i) and (iii)
(d) (ii) and (iv)

Question 5

Boojho took an empty plastic bottle, turned it upside down and dipped its open mouth into a bucket filled with water. He then tilted the bottle slightly and made the following observations.

(i) Bubbles of air came out from the bottle.
(ii) Some water entered the bottle.
(iii) Nitrogen gas came out in the form of bubbles and oxygen got dissolved in water
(iv) No bubbles formed, only water entered the bottle.

Which observations is /are correct?

a) (i) and (ii) only

b) (iv) only

c) (iii) and (iv)

d) (i) only

Which of the following alkyl halide undergo rearrangement in $S_{N} 1$ reaction

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Question 4 Boojho found a bag containing the following materials: (i) Mirror (ii) Paper stained with oil (iii) Magnet (iv) Glass spectacles Help Boojho in finding out the material(s) which is/are opaque. (a) Only (i) (b) Only (iv) (c) (i) and (iii) (d) (i) and (iv)

Mirror and magnet are opaque materials because we cannot see through these materials. Paper stained with oil is translucent material (through which we can see partially) and glass spectacles are transparent. So, option (c) is the correct answer.

Question 4

Boojho found a bag containing the following materials:

(i) Mirror

(ii) Paper stained with oil

(iii) Magnet

(iv) Glass spectacles

Help Boojho in finding out the material(s) which is/are opaque.

(a) Only (i) (b) Only (iv) (c) (i) and (iii) (d) (i) and (iv)