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VIBGYOR HIGH First Term Examination 2020-2021 CHEMISTRY Grade: X Max. Marks : 80 Date : 29/09/2020 Time Allowed: 2 hours INSTRUCTIONS: Answers to this paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading the question paper. The time given at the head of this paper is the time allowed for writing the answers. The intended marks for the questions or parts of questions are given alongside the questions. Attempt all questions from Section I and Four questions from Section II, Four out of Six questions. _________________________________________________________________________ SECTION I (40 marks) Attempt all questions from this section Q.1 A) Fill in the blanks: (i) [5] The salt formed when sulphuric acid reacts with excess sodium hydroxide solution is__________________. (ii) ______________is a normal salt of sodium formed from nitric acid. (iii) The periodic property which refers to the character of the element, which loses one or more electrons when supplied with energy is_______________. (iv) The electrode at which anions donate excess electrons and are oxidized to neutral atoms is the _____________________. (v) The impurity which separates out on addition of a concentrated solution of alkali to impure bauxite is ________________________. 1
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