When dilute hydrochloric acid is added to iron filings
A) hydrogen gas and iron chloride are formed
B) chlorine gas and iron hydroxide are formed
C) no reaction takes place
D) iron salt and water are produced
1 Answers
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hydrochloric acid — i) H2SO4 , sulphuric acid — ii) CH3COOH
B) a → iii, b →i, c →iv, d → ii
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What gas is produced when magnesium is made to react with hydrochloric acid?
Correct option is (A) hydrogen
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Which of the four tubes containing following chemicals show the brisk effervescence when dilute acetic acid is added to them ?
Correct option is B) ii & iii
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On mixing of dil. hydrochloric acid to the mixture of iron dust and sulphur powder we obtain two gases.
A) Sulphur dioxide
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An iron rod changed into iron oxide by rusting. Guess how the weights before and after rusting of the iron rod are changed,
Correct option is C) a = b
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Iron powder and powder of rust are taken in two containers X and Y respectively. Dilute sulphuric acid is added two containers
Correct Answer - B Iron is an element and rust is a compound of iron in which iron does not retain its properties and hence rust does not liberate hydrogen gas...
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A buffer solution can be prepared from a mixture of (1).Sodium acetate and acetic acid in water (2).Sodium acetate and hydrochloric acid in water (3).
Correct Answer - D is the correct answer.
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Assertion `(A)`: A small piece of zinc dissolves in dilute nitric acid but no hydrogen is evolved. Reason `(R)` : `HNO_3` is an oxidising acid and oxi
Correct Answer - A Both (A) and (R) are correct and (R) is the correct explanation of (A).
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The correct order of acid strength of following aromatic acids is : Benzoic acid (I), 4-Nitrobenzoic acid (II), 4-Dinitrobenzoic acid (III), 4-Methoxy
Correct Answer - C Factual Questions
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0.5 g of bleaching powder was suspended in water an excess of KI added. On acidifying with dilute `H_(2)SO_(4)` iodine was liberated which required 50
Correct Answer - `35.5%`
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