GENERAL SCIENCE CHEMISTRY ONE LINERS FOR TNPSC UPSC SSC SET 042
411). Which of the following statements with regard to Isotopes and Isobars is/are correct?
1. Isotopes have same mass number.
2. Isobars have same atomic number.
Select the correct answer using the code given below :
A). 1 only
B). 2 only
C). Both 1 and 2
D). Neither 1nor 2
Answer: Neither 1nor 2
412). Which of the following statements regarding carbon dioxide is/are correct?
1. It is prepared on large scale by the action of water on lime.
2. In the solid form it can be used as a refrigerant.
Select the correct answer using the code given below :
A). 1 only
B). 2 only
C). Both 1 and 2
D). Neither 1 nor 2
Answer: 2 only
413). In which one of the following situations a chemical reaction does not occur?
A). Common salt is exposed to air
B). Coal is burnt in air
C). Sodium is placed in water
D). Iron is kept in moist air
Answer: Common salt is exposed to air
414). Which one of the following materials is suitable for water purification?
A). Silicones
B). Zeolites
C). Asbestos
D). Quartz
Answer: Zeolites
415). Consider the following : Crude oil is a direct source of :
1.asphalt
2.paraffin wax
3.fatty acids
4.gas oil
Which of the above are correct ?
A). 1 and 2 only
B). 2 and 3 only
C). 1 and 4 only
D). 1, 2 and 4
Answer: 1, 2 and 4
1. Isotopes have same mass number.
2. Isobars have same atomic number.
Select the correct answer using the code given below :
A). 1 only
B). 2 only
C). Both 1 and 2
D). Neither 1nor 2
Answer: Neither 1nor 2
412). Which of the following statements regarding carbon dioxide is/are correct?
1. It is prepared on large scale by the action of water on lime.
2. In the solid form it can be used as a refrigerant.
Select the correct answer using the code given below :
A). 1 only
B). 2 only
C). Both 1 and 2
D). Neither 1 nor 2
Answer: 2 only
413). In which one of the following situations a chemical reaction does not occur?
A). Common salt is exposed to air
B). Coal is burnt in air
C). Sodium is placed in water
D). Iron is kept in moist air
Answer: Common salt is exposed to air
414). Which one of the following materials is suitable for water purification?
A). Silicones
B). Zeolites
C). Asbestos
D). Quartz
Answer: Zeolites
415). Consider the following : Crude oil is a direct source of :
1.asphalt
2.paraffin wax
3.fatty acids
4.gas oil
Which of the above are correct ?
A). 1 and 2 only
B). 2 and 3 only
C). 1 and 4 only
D). 1, 2 and 4
Answer: 1, 2 and 4
416). The metal compound commonly found in Sindhoor or Kumkum is based on
A). Tin
B). Lead
C). Copper
D). Zine
Answer: Lead
417). Alum is used as
A). an analgesic
B). a fertilizer
C). a disinfectant
D). a purifier for water
Answer: a disinfectant
418). Which among the following elements (metals) pollutes the air of a city having large number of automobiles?
A). Cadmium
B). Lead
C). Chromium
D). Nickel
Answer: Lead
419). Oxygen and ozone are
A). Allotropes
B). isomers
C). isotopes
D). isobars
Answer: Allotropes
420). When applied to the affected area, which one of the following will relieve the pain due to ant bite or bee-sting?
A). Lemon juice
B). Vinegar
C). Baking soda
D). Caustic soda
Answer: Caustic soda
A). Tin
B). Lead
C). Copper
D). Zine
Answer: Lead
417). Alum is used as
A). an analgesic
B). a fertilizer
C). a disinfectant
D). a purifier for water
Answer: a disinfectant
418). Which among the following elements (metals) pollutes the air of a city having large number of automobiles?
A). Cadmium
B). Lead
C). Chromium
D). Nickel
Answer: Lead
419). Oxygen and ozone are
A). Allotropes
B). isomers
C). isotopes
D). isobars
Answer: Allotropes
420). When applied to the affected area, which one of the following will relieve the pain due to ant bite or bee-sting?
A). Lemon juice
B). Vinegar
C). Baking soda
D). Caustic soda
Answer: Caustic soda
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