Target SSC CGL | 10,000+ Questions | Chemistry Questions For SSC CGL : Day 87

Dear aspirants,

This is the new year with new goals, new experiences and lots of exams to be scheduled soon. SSC CGL has recently released the exam dates so now it is time to gear up your preparations and try hard to get success. ADDA247 never fails to deliver something new and fruitful for you all. This time also we are providing you the best study plan as well as a study material. We are here going to prepare your General Science section for the SSC CGL. In this article, we are providing you the details that how we are going to help you to clear the examination this year. We ADDA247 is going to provide you daily tests for all the subjects. The topic-wise quiz will be done from January till April. This will help you to get a deeper knowledge of all the topics and will prepare you thoroughly.

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Q1. The advantage of detergents over soaps is –
(a) detergents are soluble in water
(b) detergents could not give much lather
(c) detergents give lather even with hard water
(d) soaps give lather with only soft water

Q2. The gas used for artificial fruit ripening of green fruit is –
(a) Naphthalene
(b) Acetylene
(c) Ethane
(d) Methane

Q3. The substance most commonly used as a food preservative is –
(a) Sodium carbonate
(b) Tartaric acid
(c) Lactic acid
(d) Sodium salt of benzoic acid

Q4. Tetra Ethyl Lead (TEL) is used as-
(a) a catalyst in burning fossil fuel
(b) an antioxidant
(c) a reluctant
(d) an antiknock compound

Q5. Detergents clean surfaces on the principle of –
(a) Viscosity
(b) Surface tension
(c) Elasticity
(d) Floatation

Q6. The element which is used for vulcanizing rubber –
(a) Sulphur
(b) Bromine
(c) Silicon
(d) Phosphorus

Q7. Which one of the following is used in making pencils?
(a) Charcoal
(b) Bone black
(c) Black ash
(d) Graphite

Q8. Pollutant from motor car exhaust that causes mental disease is –
(a) Pb
(b) NO2
(c) SO2
(d) Hg

Q9. The ozone layer is present in –
(a) Troposphere
(b) Ionosphere
(c) Stratosphere
(d) Exosphere

Q10. The two metal ions that cause hardness to water are –
(a) Calcium and Magnesium
(b) Sodium and Calcium
(c) Sodium and Potassium
(d) Sodium and Magnesium

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S1. Ans.(c)
Sol. Detergents give lather even with hard water while soaps give lather with only soft water.

S2. Ans.(b)
Sol. The gas used for artificial fruit ripening of green fruit is Acetylene.

S3. Ans.(d)
Sol. Sodium benzoate (sodium salt of benzoic acid) is most commonly used as a food preservative.

S4. Ans.(d)
Sol.Tetra Ethyl Lead (TEL) is used as Anti knock agent.

S5. Ans.(b)
Sol. Detergents clean surfaces on the principle of surface tension. Detergents are soapless soap. They produce leather with soft water as well as hard water.

S6. Ans.(a)
Sol. Vulcanisation is a chemical process for converting rubber or related polymers into more durable materials via the addition of sulphur or other equivalent curatives or accelerators. By far the most common vulcanising methods depend on sulphur.

S7. Ans.(d)
Sol.Graphite is used to make pencil.

S8. Ans.(a)
Sol. Pollutant from motor car exhaust that causes mental disease is lead. Lead is produced cause lead poisoning.

S9. Ans.(c)
Sol.
Ozone layer is present in Stratosphere.

S10. Ans.(a)
Sol.
The bicarbonates, chlorides and sulphates of calcium and magnesium cause hardness to water.The bicarbonates cause temporary hardness while chlorides and sulphates cause permanent hardness.

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