Question

EXERCISES
BE PROMPT
Fill in the blanks.
1.
were regarded as early chemists.
2.
is considered as the 'Father of Modern Chemistry'.
3. John Dalton is credited for proposing
4. Terylene is a
fibre.
5. Cheese and breads are examples of
6.
is an example of an antibiotic.
Identify the error in the given statements. Circle the incorrect word and write the correct word in
the blank.
1. Science has two main branches: chemical science and natural science.
r
2. By the late seventeenth century, the field of chemistry had completely
separated from traditional alchemy.
3. JJ. Thomson discovered the proton.
4. Jam and jelly are the processed foods,
5. Manufacturing of clothes involves the combination of fibres into fabrics.
6. Paracetamol is an antibiotic used to treat infections.
Choose the correct option.
1. Chemistry is a
science.
(a) social
(b) physical
(c) life
(d) none of these
2. Which of the following metals was considered the purest according to alchemy?
(a) Potassium
(b) Silver
(c) Sodium
(d) Gold
5. Who gave the 'law of conservation of mass'?
(a) Dmitri Mendeleev
(b) Niels Bohr
(c) Antoine Lavoisier
(d) John Dalton
Which of the following is not a preservative?
(a) Sugar
(b) Salt
(c) Vinegar
(d) Yogurt
Which of the following come under the category of cosmetics?
(a) Skin cleansers (b) Moisturisers (c) Perfumes (d) All of these
Which of the following is a synthetic fibre?
(a) Cotton
(b) Nylon
(c) Silk
(d) Wool
11​

Answer 1

Explanation:

McQ

1. physical

2. gold

3. (I don't know)

4. salt (I think so)

5. all of these

6. nylon

sorry but I only know McQ except (3)

Answer 2

Answer:

Fill in the blank

Explanation:

we regarded as early chemist