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ICSE Guess > ICSE Papers > Question Bank > Class X > 2008 >Chemistry

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.

Section I is compulsory. Attempt any four questions from Section II
The intended marks for questions or the parts of questions given in brackets [ ].

SECTION I (40 Marks)
Attempt all questions from this Section

Question 1

(a) For parts (a)(i) - (a)(x), select the correct answer from the choices A, B, C, D which are given.Write down only the letter corresponding to the correct answer . [10]

(i) With reference to the variation of properties in the Periodic Table, which of the following is generally true?

A  Atomic size increases from left to right across a period.
B  Ionization potential increases from left to right across a period.
C  Electron affinity increases going down a group
D  Electro-negativity increases going down a group

(ii) Which of the following is not a common characteristic of an electrovalent compound?

A  High melting point.
B  Conducts electricity when molten
C  Consists of oppositely charged ions.
D  Ionizes when dissolved in water

(iii) Dilute sulphuric acid will produce a white precipitate when added to a solution of:

A Copper nitrate
B Zinc nitrate
C Lead nitrate
D Sodium nitrate

(iv) The salt which in solution gives a pale green precipitate with sodium hydroxide solution and a white precipitate with barium chloride solution is:

A Iron(III) sulphate
B Iron(II) sulphate
C Iron(II) chloride
D Iron(III) chloride