Chemistry Ncert Level -01 - A- 50Q
1. Which of the following is a super-cooled liquid?
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2. Soap is prepared by boiling caustic soda with –
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3. Bronze is an alloy of –
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4. Which of the following elements is non-radioactive?
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5. The gas used for artificial fruit ripening of green fruit is –
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6. Manganite is an ore/mineral of
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7. The presence of which of the following salts in water causes corrosion in steam boilers?
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8. The freezing point of fresh water is -
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9. What is used for making vinegar.
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10. Which of the following elements replaced eka-Aluminium in Mendeleev's Periodic Table?
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11. The most reactive among the halogens is -
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12. Which one of the following organic compounds has fruity smell?
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13. What material is used to make electric heater coil?
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14. Which one of the following is a major green gas?
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15. Pasteurisation is the process in which milk is heated to –
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16. What is the maximum Water Vapour content in the atmosphere?
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17. Steel contains –
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18. The chemicals most commonly used for cloud seeding or artificial rainmaking' is/are
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19. The Refrigerant 'FREON' is –
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20. what is the number of shells for elements of the 3rd period.
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21. Which one among the following polymers is used for making bullet-proof material?
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22. The nucleus of an atom consists of -
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23. The isotope of Uranium capable of sustaining chain reaction is -
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24. Conversion of chemical energy into electrical energy occurs in -
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25. The fuel that is used in modern submarines is –
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26. When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is -
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27. Which one of the following elements is least likely to be found in commercial fertilizers?
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28. In the electroplating of gold, the electrolyte used is –
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29. The basic chemical building block of natural rubber obtained from trees is –
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30. The name of plastic polymer from which combs, toys, bowls etc., can be made, is
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31. 'Red Ink' is prepared from -
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32. Gas released during Bhopal tragedy was -
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33. Oil of vitriol is -
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34. Hydrogen was discovered by -
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35. Glass is a –
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36. Uranium eventually decays into a stable isotope of
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37. The substance that is added to make natural rubber strong and more bouncy is
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38. White phosphorus is always kept under
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39. The amount of Chlorine available in water after disinfection is called as –
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40. What are the major pollutants of cigarette smoke?
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41. The chemical name of 'Common salt' is
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42. By-product obtained by soap industry is –
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43. Polythene is polymer of –
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44. Which one is not micronutrient?
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45. Who suggested that the most of the mass of atom is located in nucleus?
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46. Electromagnet is constructed with which of the following?
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47. Which one of the following is a cation?
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48. Ginger is an example of -
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49. The ore which is found in abundance in India is -
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50. Baryllium Sulphate is less soluble in water due to –
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