NCERT Class VI Science Solutions: Chapter 4 – Fibre to Fabric Part 2

Download PDF of This Page (Size: 356K)

Question 7:

Which among the following are commonly used for making a safety pin?

  1. Wood and glass

  2. Plastic and glass

  3. Leather and plastic

  4. Steel and plastic

Answer: D

Image of Safety pin

Image of Safety Pin

Image of Safety pin

Question 8:

Which of the following materials is not lustrous?

  1. Gold

  2. Silver

  3. Wood

  4. Diamond

Answer: C

Question 9:

Which of the following statements is not true?

  1. Materials are grouped for convenience.

  2. Materials are grouped to study their properties.

  3. Materials are grouped for fun.

  4. Materials are grouped according to their uses.

Answer: C

Question 10:

Find the odd one out from the following

  1. Tawa

  2. Spade

  3. Pressure cooker

  4. Eraser

Answer: D

Question 11:

Which type of the following materials is used for making the front glass (wind screen) of a car?

  1. Transparent

  2. Translucent

  3. Opaque

  4. All the above

Answer: A

VERY SHORT ANSWER QUESTIONS

Question 12:

It was Paheli’s birthday. Her grandmother gave her two gifts made of metals, one old dull silver spoon and a pair of lustrous gold earrings. She was surprised to see the difference in the appearance of the two metals. Can you explain the reason for this difference?

Answer:

Gold metals does not lose its shine or luster when exposed to atmosphere. So gold ornaments look new even after several years of use. Actually, gold metal is highly unreactive metal which remains unaffected by air, water and other gases in the atmosphere whereas silver metal on long exposure to moist air loses its shine and becomes dull. That why old silver spoon was giving dull appearance.

Question 13:

Mixtures of red chilli powder in water, butter in water, petrol in water, and honey in water were given to Radha, Sudha. Sofia and Raveena, respectively. Whose mixture is in solution form?

Answer:

Raveena has got a solution because honey will dissolve in water.

Developed by: