20 Questions. 20 marks. 30 mins.
#1. Ionisation energy depends upon ________ and _______.
#2. With the increase in nuclear charge, the non-metallic character of element _______.
#3. The bond formed between two atoms by sharing of pair of electrons, provided by one of combining atoms is called
#4. If the electronegativity difference between the two atoms of a molecule is _______, covalent bond is formed.
#5. Salts formed by the partial replacement of the hydroxyl group of di or triacidic base by an acid radical are called _______ salt.
#6. The acid which is not formed by synthesis
#7. When few drops of sodium hydroxide solution are added to ferric chloride solution a ______ ppt of _____ is formed.
#8. The hydroxide which is soluble in NaOH
#9. During electrolysis of copper sulphate solution using Cu electrode, the colour of the electrolyte _____.
#10. The non electrolyte among the following
#11. An aqueous solution of _____ electrolyte contains only free ions.
#12. The product formed at the anode and cathode when electricity is passed through molten lead bromide.
#13. Calculate the molecular weight of a gas, 100 mL of which weighs 50g. 20g of hydrogen gas under similar condition of temperature and pressure occupies 1L.
#14. A compound contains 40% Carbon, 6.7% Hydrogen and 53.3% Oxygen. If the vapour density of the compound is 90. Calculate its molecular formula.[C=12,H=1,O=16]
#15. The base which produces lesser amount of hydroxyl ion in aqueous solution.
#16. The non-polar covalent compound among the following
#17. The ion which will be selectively discharged at the cathode
#18. The type of compound which is insoluble in water but dissolve in organic solvents.
#19. Percentage of carbon in CH3CH2OH. (C=12, H=1, O=16)
#20. The element with highest metallic nature
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