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G.K Question and Answer - Chemistry MCQs Set IV

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1. Which of the following metal is the hardest one?




2. The gas emancipating through paddy field is :




3. Which of the following is the heaviest metal?




4. The colours of the fire crackers are extracted from the elements of the salt of:




5.  The maximum density of the water exists at :




6. The boiling point and freezing point of the water on mixing edible salt would:




7. The permanent hardness of water appears due to the:




8. In which of the following carbon is not present?




9. The heavy water is a type of:




10. In all bio compounds the most necessary fundamental element is:




11. Which of the following is the most hard?




12. The percentage content of carbon is more than other coal in:




13. The ordinary and general type of coke is :




14. The polluted gas emitted from the vehicles is mainly:




15. Which of the following gas pollutes the most to the air?




16. Dry ice is:




17. Quartz is composed of:




18. The laughing gas utilized in the form of anaesthesia by the doctors is:




19.  The chemical substance which is easily soluble in water:




20. Usually the coolant which is used as domestic coolant:




21. Tear gas is:




22. Which of the following is the most abundantly occurring element in the earth-crust?




23. Which of the following is a paramagnetic substance?




24. 0xygen and Ozone are:




25. Which of the following when passes through the alkaline solution of the pyrogalol then ground nut coloured solution is formed?




26. Which of the following gas is directly respondent for the depletion of ozone layer?




27. Which of the following gas is directly respondent for the acid rain in the atmosphere?




28. Which of the following is assumed to be the most fundamental chemical in the chemical industry?




29.  The electrolyte employed in the car battery is:




30. Through the reaction of sugar and sulphuric acid which of the following is obtained in its pure form:




31. Which of the following is the most reactive among the halogens?




32. Which of the following noble gas doesn't exist in the air?




33. The contribution of the invention of the inert gases goes to:




34. The gas utilized to fill up the tyres of the aircraft is:




35. Which of the following gas is utilized to fill up the balloon, especially when weather related prediction and reporting is to be done?




36. The gases employed for the respiratory activities of sailors (divers) are:




37. The spreading out and mixing of a substance with another substance due to motion of its particles is called:




38. The process by which solid substance changes into liquid is called:




39. The process in which a liquid substance change into gas rapidly on heating is called:




40. What is the process called in which gas is changed into liquid by cooling?




41. The changing of a solid directly into vapours on heating, and of vapours into solid on cooling is called:




42.  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:




43. What is an element that is malleable and ductile, and conducts electricity called?




44. An elements that is neither malleable nor ductile, and does not conduct electricity is called:




45. A substance made up of two or more elements chemically combined in a fixed proportion by mass is called:




46. A homogeneous mixture of two or more substances in called:




47.  A homogeneous mixture of two or more substances is called:




48. A kind of solution in which the size of solute particles is intermediate between those in true solutions and those in suspensions is called:




49. The smallest particle of an element that can take part in a chemical reaction is called: