which element is used in long glass tube? *
1 point
a) Sodium
b) Potassium
c) Mercury
d) None of the above
3.2 In which of the following figure is the atmospheric pressure highest *
1 point
Captionless Image
a) i
b) ii
c) iii
d) iv
This is a required question
3.3 Atmospheric pressure is *
1 point
a) pressure exerted by water on earth
b) pressure exerted by air on earth
c) pressure exerted on atmosphere by earth
d) none of the above
3.4 on a cloudy day a sealed packet of potato chips was taken on a mountain. It was found to be blown up like a balloon. It could be due to *
1 point
a) the air outside the pocket is hotter than the air inside the packet
b) the air outside is now at a lower pressure than inside air
c) the ultraviolet radiation has increased
d) the packet has a small hole due to which air went in
Answers
Answer:
(a) Iron
(b) Gold
(c) Zinc
(d) Potassium.
2. The liquid metal at room temperature
(a) Mercury
(b) Bromine
(c) Sodium
(d) Gold.
3. Non-metals are:
(a) generally liquids
(b) generally gases
(c) generally solids and gases
(d) generally gases and liquids.
4. The metal which is stored in kerosene:
(a) Phosphorus
(b) Magnesium
(c) Sodium
(b) Magnesium
5. The non-metal which is liquid at room temperature is:
(a) Carbon
(b) Iodine
(c) Bromine
(d) Chlorine.
6. Materials around us can be classified into
(a) Elements and compounds
(b) Metals and non-metals
(c) Acids and bases
(d) None of these.
7. All metals are solids except
(a) Sodium
(b) Calcium
(c) Mercury
(d) Hydrogen.
8. Metal oxides are of nature
(a) Acidic
(b) Basic
(c) Neutral
(d) All of these.
9. The metal which can be cut with a knife
(a) Sodium and potassium
(b) Barium and calcium
(c) Sodium and mercury
(d) Potassium and calcium.
10. When non-metals react with water then
(a) Hydrogen gas is formed
(b) Carbon dioxide gas is formed
(c) Non-metals do not react with water
(d) None of these.
Answers

Answer:
q1)c. mercury
Q3)d.none of d above
q4)b.lower pressure