1. Which one among the following fuels is used in gas Welding?
a. LPG
b. Ethylene
c. Methane
d. Acetylene
2. Arrange the following tributaries of river Indus from North to South___
1. Chenab
2. Jhelum
3. Ravi
4. Sutlej
Select the correct answer using the code given below
a. 4,3,1,2
b. 2,3,1,4
c. 1,2,3,4
d. 2,1,3,4
3. Which one of the following diseases in humans can spread through air?
a. Dengue
b. Tuberculosis
c. HIV/AIDS
d. Goitre
4. Which one among the following metals is prominently used in mobile phone batteries?
a. Copper
b. Zinc
c. Nickel
d. Lithium
5. Who among the following proposed that atom is indivisible?
a. Dalton
b. Berzelius
c. Rutherford
d. Avogadro
6. Which one among the following processes is not part of a chemical weathering?
a. Hydration
b. Exfoliation
c. Oxidation
d. Solution
7. Ozone layer of the Earth's atmosphere is important for living organisms because it ____
a. Prevents entry of ultraviolet rays
b. Prevent entry of X-rays
c. Maintains level of oxygen on Earth
d. Prevents acid rain on Earth
8. How many elements are there in the 5th period of modern periodic table?
a. 2
b. 8
c. 18
d. 36
9. Which one among the following is used i making lead pencils?
a. Charcoal
b. Graphite
c. Coke
d. Carbon black
10. Which one among the following structures or cells is not present in connective tissues?
a. Chondrocytes
b. Axon
c. Collagen fibre
d. Lymphocytes
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Answer Key
1. d. Acetylene
2. d. 2,1,3,4
3. b. Tuberculosis
4. d. Lithium
5. a. Dalton
6. b. Exfoliation
7. a. Prevents entry of ultraviolet rays
8. c. 18
9. b. Graphite
10. b. Axon
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