Chemistry (General Science): All SSC Exams Previous Years Questions Papers Solved Part 8

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Q.1:- In deep-sea diving, divers use a mixture of gases consisting of Oxygen and ?

  1. Hydrogen
  2. Nitrogen
  3. Argon
  4. Helium

Q.2:- Which one of the following group of gases contribute to the “Green House Effect” ?

  1. Carbon Dioxide and Methane
  2. Ammonia and Ozone
  3. Carbon Monoxide and Sulphur Dioxide
  4. Carbon Tetraflouride and Nitrous Oxide

Q.3:- The gas causing acid rain in an industrial area is ?

  1. Carbon Dioxide
  2. Carbon Monoxide
  3. Sulphur Dioxide
  4. Methane

Q.4:- Benzene cannot undergo ?

  1. Substitution
  2. Addition
  3. Elimination
  4. Oxidation

Q.5:- Which of the following is colourless ?

  1. Chlorine
  2. Oxygen
  3. Phosphorous
  4. Sulphur

Q.6:- Brass gets discoloured in air due to constant exposure in presence of ?

  1. Aluminium Phosphide
  2. Hydrogen Sulphide
  3. Hydrogenated Wafers
  4. Aluminium Sulphide

Q.7:- Which among the following is liquid non-metal ?

  1. Mercury
  2. Bromine
  3. Water
  4. Alcohol

Q.8:- Philosopher’s Wool is ?

  1. Zinc Carbonate
  2. Zinc Sulphate
  3. Zinc Oxide
  4. Zinc Blende

Q.9:- Bleaching powder is prepared by passing ?

  1. Chlorine over slaked lime
  2. Oxygen over slaked lime
  3. Carbon dioxide over slaked lime
  4. Chlorine over quick lime

Q.10:- The element used for making solar cells is ?

  1. Magnesium
  2. Sodium
  3. Calcium
  4. Silicon

Q.11:- Refrigerators keep food unspoiled because ?

  1. At its low temperature, bacteria and moulds are inactive
  2. At its low temperature, the germs are killed
  3. At its low temperature, the germs are frozen
  4. It sterilises the food

Q.12:- The resources which can be used continuously, year after year are called ?

  1. Biotic
  2. Abiotic
  3. Non-Renewable
  4. Renewable

Q.13:- The mass number of a nucleus is ?

  1. Always less than its atomic number
  2. Always more than its atomic number
  3. Always equal to tits atomic number
  4. Sometimes more and sometimes equal to its atomic number

Q.14:- In addition to Hydrogen, the other abundant element present on Sun’s surface is ?

  1. Helium
  2. Neon
  3. Argon
  4. Oxygen
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Q.15:- The acid which is secreted by the glands in the stomach wall is ?

  1. Sulphuric Acid
  2. Hydrochloric Acid
  3. Nitric Acid
  4. Phosphoric Acid

Q.16:- In the electroplating of gold, the electrolyte used is ?

  1. Gold Chloride
  2. Gold Nitrate
  3. Gold Sulphate
  4. Potassium Aurocyanide

Q.17:- In a nuclear reactor the material use for absorbing neutrons is ?

  1. Zinc
  2. Radium
  3. Lead
  4. Cadmium

Q.18:- Which of the following is a renewable source of energy ?

  1. Coal
  2. Geothermal Powder
  3. Natural Gas
  4. Uranium

Q.19:- The material used in solar cells contains ?

  1. Tin
  2. Silicon
  3. Caesium
  4. Thallium

Q.20:- Gold dissolves in ?

  1. Hydrochloric acid
  2. Nitric acid
  3. Aqua-regia
  4. Acetic Acid

Q.21:- The coloured discharge tubes for advertisement mainly contain ?

  1. Xenon
  2. Argon
  3. Helium
  4. Neon

Q.22:- When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is ?

  1. Hydrogen
  2. Oxygen
  3. Carbon Dioxide
  4. All of them

Q.23:- The Fungus which is used in the alcohol industry is ?

  1. Mushroom
  2. Candida Aibicans
  3. Yeast
  4. Rhizopus

Q.24:- Cement containing excess amount of lime ?

  1. Cracks during setting
  2. Becomes more strong
  3. Is slow setting
  4. Is quick setting

Q.25:- What particles move around the nucleus of an atom and are negatively charged ?

  1. Electrons
  2. Protons
  3. Positrons
  4. Neutrons

 

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