Dry ice is:

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Question:
Dry ice is:

1.Solid water

2.Solid CO2

3.Dehydrated ice

4.Solid H2O2

Posted Date:-2021-03-07 09:36:20

More MCQS Questions and answers

  1. 0xygen and Ozone are:
  2. A homogeneous mixture of two or more substances in called:
  3. A kind of solution in which the size of solute particles is intermediate between those in true solutions and those in suspensions is called:
  4. A substance made up of two or more elements chemically combined in a fixed proportion by mass is called:
  5. An elements that is neither malleable nor ductile, and does not conduct electricity is called:
  6.  A homogeneous mixture of two or more substances is called:
  7.  A substance which cannot be split up into two or more simpler substances by the usual chemical methods of applying heat, light or electric energy is called:
  8.  The chemical substance which is easily soluble in water:
  9.  The electrolyte employed in the car battery is:
  10.  The maximum density of the water exists at :
  11. Dry ice is:
  12. In all bio compounds the most necessary fundamental element is:
  13. In which of the following carbon is not present?
  14. Which of the following metal is the hardest one?
  15. Quartz is composed of:
  16. Tear gas is:
  17. The boiling point and freezing point of the water on mixing edible salt would:
  18. The changing of a solid directly into vapours on heating, and of vapours into solid on cooling is called:
  19. The colours of the fire crackers are extracted from the elements of the salt of:
  20. The contribution of the invention of the inert gases goes to:
  21. The gas emancipating through paddy field is :
  22. The gas utilized to fill up the tyres of the aircraft is:
  23. The gases employed for the respiratory activities of sailors (divers) are:
  24. The heavy water is a type of:
  25. The laughing gas utilized in the form of anaesthesia by the doctors is:
  26. The ordinary and general type of coke is :
  27. The percentage content of carbon is more than other coal in:
  28. The permanent hardness of water appears due to the:
  29. The polluted gas emitted from the vehicles is mainly:
  30. The process by which solid substance changes into liquid is called:
  31. The process in which a liquid substance change into gas rapidly on heating is called:
  32. The smallest particle of an element that can take part in a chemical reaction is called:
  33. The spreading out and mixing of a substance with another substance due to motion of its particles is called:
  34. Through the reaction of sugar and sulphuric acid which of the following is obtained in its pure form:
  35. Usually the coolant which is used as domestic coolant:
  36. What is an element that is malleable and ductile, and conducts electricity called?
  37. What is the process called in which gas is changed into liquid by cooling?
  38. Which of the following gas is directly respondent for the acid rain in the atmosphere?
  39. Which of the following gas is directly respondent for the depletion of ozone layer?
  40. Which of the following gas is utilized to fill up the balloon, especially when weather related prediction and reporting is to be done?
  41. Which of the following gas pollutes the most to the air?
  42. Which of the following is a paramagnetic substance?
  43. Which of the following is assumed to be the most fundamental chemical in the chemical industry?
  44. Which of the following is the heaviest metal?
  45. Which of the following is the most abundantly occurring element in the earth-crust?
  46. Which of the following is the most hard?
  47. Which of the following is the most reactive among the halogens?
  48. Which of the following noble gas doesn't exist in the air?
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