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Chemistry-day-2 physical-chemical-changes-mcq-Target ssc cgl 2018

Chemistry-day-2 physical-chemical-changes-mcq-Target ssc cgl 2018

Chemistry-day-2 physical-chemical-changes-mcq-Target ssc cgl 2018

Q1. Two solutions are added together and the new solution becomes hot. This means…

  1. a gas is being produced.
  2. the solutions are not soluble.
  3. the physical properties are the same.
  4. a chemical change is taking place

Q2. To make flexible items, a substance is added to PVC, this substance is known as

  1. ester
  2. ketone
  3. halo alkanes
  4. plasticizer

Q3. Natural substances made up of long molecules are

  1. plastic and rubber
  2. rubber and wool
  3. wool and plastic
  4. wood and plastic

Q4. Number of atoms in one molecule of ethene is

  1. 2
  2. 3
  3. 4
  4. 6

Q5. Photosynthesis is a/an

  1. Condensation reaction
  2. Exothermic reaction
  3. Reversible reaction
  4. Endothermic reaction

changes-mcq
Q6. Respiration is a

  1. physical process
  2. chemical process
  3. biological process
  4. temporary process

Q7. When particles cool down, change in energy is

  1. from kinetic to heat energy
  2. from kinetic to potential energy
  3. from potential to kinetic energy
  4. from thermal to potential energy

Q8. Ammonia fertilizers are made by two components, those are

  1. Ammonia and Hydrogen
  2. Ammonia and Nitric Acid
  3. Nitrogen and Hydrogen
  4. Nitrogen and Water

Q9. Ethene is a

  1. liquid hydrocarbon
  2. solid hydrocarbon
  3. gaseous hydrocarbon
  4. plasmid hydrocarbon

 Q10. When methane is combusted, products formed are

  1. Carbon dioxide and Water
  2. Carbon dioxide and Hydrogen
  3. Oxygen and Hydrogen
  4. Nitrogen and Oxygen

Chemistry physical-chemical-changes Answer Key

changes-mcq
 

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2 thoughts on “Chemistry-day-2 physical-chemical-changes-mcq-Target ssc cgl 2018

  1. answer of question number 6 is not correct .it should be optiob C i.e. biological process.

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