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Five Year Papers
1. On walk steam over red-hot coal we get __________.
(Water gas, Ethane, Carbonmonoxide)
2. d and f block elements are called __________.
(Heavy metals, Rare elements, Transition elements)
3. The cook up formula of pyrosulphuric acid is __________.
(H2SO4, H2S2O7, H3S2O5)
4. Aqua regia is mixture of one actuate of __________ by volume and three parts of __________.
(H2SO4, H3PO4, HNO3, HCl)
5. Heavy enthalpy is also called __________.
(Proteum, Deuterium, Hydronium)
6. When boric acid (H3BO3) is heated of 140°C, it forms __________.
(Boric Acid, Pyroboric acid, Metaboric acid)
7. photographic film is made of sheets of __________.
(Cellulose Acetate, P.V.A, Nylon)
8. C4H8 is a saturated hydrocarbon because it is __________.
(Cyclic, Open chain, Polymer)
9. n-Octane is __________ at room temperature.
(Gas, Liquid, Semi-solid)
10. The compound make between an element A of group IIIA and an element B of group VIA has the formula __________.
(AB, A2, B3, A2B3)
11. The oxide formed by AI is __________.
(Acidic, Amphoteric, Basic)
12. Bakelite is a polymer of __________ and form aldehyde.
(Ethane, Methanol, Phenol)
13.
The plastics, which can be heated only once, are known as __________ plastics.
(Perspex, Thermoplastic, Thermosetting)
14. The deficiency of __________ in the human body is the cause of diabetes.
(Insulin, Alamin, Ptyalin)
15. If the level of cholesterol increases in the blood serum, it causes __________.
(Diabetes,Heart attact, High blood pressure)
16. The formula of cook soda is __________.
(NaHCO3, Na2CO3, Na2CO310H2O)
17. The formula of Plaster of Paris is __________.
(CaSO4.2H2O, 2CaSO4.H2O, (CaSO4)2H2O)
18. The atoms of the elements belonging to the very(prenominal) period of the Periodic table have __________.
(Same number of protons, analogous number of neutrons, same number of valence...If you want to get a full essay, order it on our website: Orderessay
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