12th chemistry objective questions and answers in english

16. CHEMISTRY IN EVERYDAY LIFE 1. The use of chemicals for treatment of diseases is called (A)…

15. POLYMERS 1. Bakelite is an example of - (A) elastomer (B) fibre (c) thermoplastic (D)…

14. BIOMOLECULES 1. On oxidation with a mild oxidising agent like Br2/H2O, the glucose is oxidized to (A)…

14.AMINES 1. Nitrogen atom of amino group is ........... hybridised. (A) sp (B) sp2 (C) sp3 (D) sp3d…

12. ALDEHYDES, KETONES AND CARBOXYLIC ACIDS 1. Propanone can be prepared from ethyne by (A) passing a…

11. ALCOHOLS, PHENOLS AND ETHERS 1. One mole of ethyl acetate on treatment with an excess of LiAlH4 in dry…

10. HALOALKANES AND HALOARENES 1. Good conductor of electricity and heat is (A) Anthracite coke (B)…

9. CO-ORDINATION COMPOUNDS 1. K2 is a/an (A) double salt (B) complex salt (C) acid (D) base…

8. THE D- AND f-BLOCK ELEMENTS 1. Oxidation number of gold metal is (A) + 1 (B) O (C) – 1 (D) all of…

7. THE P-BLOCK ELEMENTS 1. Boron shows diagonal relation with (A) Al (B) C (C) Si (D) Sn Answer ⇒…