chemistry objective question class 12 bihar board
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chemistry
16. CHEMISTRY IN EVERYDAY LIFE Objective
16. CHEMISTRY IN EVERYDAY LIFE 1. The use of chemicals for treatment of diseases is called (A) chemotherapy (B) physiotherapy…
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chemistry
15. POLYMERS Objective
15. POLYMERS 1. Bakelite is an example of – (A) elastomer (B) fibre (c) thermoplastic (D) thermosetting 2. Arrange the…
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chemistry
14. BIOMOLECULES Objective
14. BIOMOLECULES 1. On oxidation with a mild oxidising agent like Br2/H2O, the glucose is oxidized to (A) saccharic acid…
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chemistry
13.AMINES Objective
14.AMINES 1. Nitrogen atom of amino group is ……….. hybridised. (A) sp (B) sp2 (C) sp3 (D) sp3d 2. The…
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chemistry
12. ALDEHYDES, KETONES AND CARBOXYLIC ACIDS Objective
12. ALDEHYDES, KETONES AND CARBOXYLIC ACIDS 1. Propanone can be prepared from ethyne by (A) passing a mixture of ethyne…
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chemistry
11. ALCOHOLS, PHENOLS AND ETHERS Objective
11. ALCOHOLS, PHENOLS AND ETHERS 1. One mole of ethyl acetate on treatment with an excess of LiAlH4 in dry…
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chemistry
10. HALOALKANES AND HALOARENES Objective
10. HALOALKANES AND HALOARENES 1. Good conductor of electricity and heat is (A) Anthracite coke (B) Diamond (C) Graphite (D)…
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chemistry
9. CO-ORDINATION COMPOUNDS Objective
9. CO-ORDINATION COMPOUNDS 1. K2[Fe(CN)6] is a/an (A) double salt (B) complex salt (C) acid (D) base 2. Which of…
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chemistry
8. THE D- AND f-BLOCK ELEMENTS Objective
8. THE D- AND f-BLOCK ELEMENTS 1. Oxidation number of gold metal is (A) + 1 (B) O (C) –…
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chemistry
7. THE P-BLOCK ELEMENTS Objective
7. THE P-BLOCK ELEMENTS 1. Boron shows diagonal relation with (A) Al (B) C (C) Si (D) Sn 2. Catenation…
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