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Carbon tetrachloride...

Carbon tetrachloride

A

non-electrolyte

B

strong electrolyte

C

weak electrolyte

D

metallic conductor

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Match the following in column A with the correct answer form the choices given in column B: Column A: 1. Ammonium hydroxide soln., 2. Dilute hydrochloric acid, 3. Carbon tetrachloride Column B: A:Contains only ions, B: Contains only molecules, C: Contains ions & molecules

Explain with the help of - electron dot diagrams - the formation of the following molecules, stating the valency of each element involved. [a] Hydrogen [b] Chlorine [c] Oxygen [d] Nitrogen [e] Water [f] Methane [ g] Carbon tetrachloride [h] Ammonia [i] Carbon dioxide [at.nos. H = 1, C = 6, N = 7, O = 8, Cl = 17].

Choose A,B,C or D match the descriptions (i) to (iv) alphabets may be repeated . (A) nonelectrolyte (B) strong elestrolyte (C ) weak electrolyte (D) metallic conductor (i) Molten ionic compound (ii) Carbon tetrachloride (iii) An aluminium wire (iv) A solution containing solvent molecules , solute molecules and ions formed by the dissociation of solute molecules . (v) A sugar solution with sugar molecules and water molecules .

Methane is the first member of alkane, when it is treated with excess of chlorine in the presence of diffused sunlight forms carbon tetrachloride. Draw the appropriate structural formula of carbon tetrachloride and state the type of bond present in it.

Compound (A) C_(6)H_(12) gives a positive test with bromine in carbon tetrachloride. Reaction of (A) with alkaline KMnO_(4) yields only (B) which is the potassium salt of an acid. Write structure formulae and IUPAC name of (A) and (B).

Equation for the reaction when compound A is bubbled through bromine dissolved in carbon tetrachloride is as follows: A overset(Br_(2)//C Cl_(4)) to underset(CH_(2)Br)underset(|)(CH_(2))Br Draw the structure of A.

An unknown compound decolorizes bromine in carbon tetrachloride, and it undergoes catalytic reduction to give decalin. When treated with warm, conc, potassium permangate, this compound give cis-cyclohexane-1, 2-dicaboxylic acid and oxalic acid. Possible a structure for th unknown compound is-

A compound is soluble in conc. H_(2)SO_(4) . It does not decolourise bromine in carbon tetrachloride but oxidised by chromic anhydride in aqueous sulphuric acid within two seconds, turning organge solution to blue, green and then opaque. The original compound is :

Compond A is bubbled through bromine dissolved in carbon tetrachloride and the product is CH_2Br - CH_2Br . A overset(Br_2//"CC"l_4) rarr CH_2 Br - CH_2 Br . (i) (i) Draw the structural formula of A. (ii) What type of reaction has undergone ? (iii) What is your observation ? (iv) Name (not formula) the compound formed when steam reacts with A in the presence of phosphoric acid. (v) What is the procedure for converting the product of (iv) back to A?

Match the following lists : List 1 List 2 Property to be determined Method used for determination ( A ) Molecular mass of a volatile oragnic solid 1. Silver salt method (B ) Molecular mass of anon-volatile organic solid 2. Liebig method ( C ) Estimation of chlorine in carbon tetrachloride 3. Platinichloride method ( D ) Estimation of nitrogen in aniline 4. Victor Meyer's method ( E ) Equivalent mass of an organic acid 5. Depression in freezing point ( F ) Equivalent mass of an organic base 7. Carius method ( G ) Estimation of carbon and hydrogen in an organic 7. Kjeldahl's method compound Codes :

ICSE-ELECTROLYSIS-QUESTIONS FROM PREVIOUS ICSE BOARD PAPERS
  1. Write the equation of the reactions which take place at the cathode an...

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  2. Molten ionic compound

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  3. Carbon tetrachloride

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  4. An aluminium wire

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  5. A solution containing solvent molecules, solute molecules and ions for...

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  6. A sugar solution with sugar molecules and water molecules

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  7. During the electrolysis of molten lead bromide, which of the following...

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  8. During the electrolysis of molten lead bromide, which of the following...

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  9. During the electrolysis of molten lead bromide, which of the following...

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  10. During the electrolysis of molten lead bromide, which of the following...

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  11. Here is an electrode reaction Cu to Cu^(2+) + 2e^(-) At which e...

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  12. A solution contains magnesium ions (Mg^(2+)) ,iron (II) ions (Fe^(2+))...

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  13. Why is carbon tetrachloride, which is a liquid and non-electrolyte ?

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  14. A metal article is to be electroplated with silver. The electrolyte se...

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  15. A metal article is to be electroplated with silver. The electrolyte se...

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  16. A metal article is to be electroplated with silver. The electrolyte se...

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  17. A metal article is to be electroplated with silver. The electrolyte se...

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  18. A metal article is to be electroplated with silver. The electrolyte se...

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  19. Aqueous solution of Nickel sulphate contains Ni^(2+) and SO(4)^(2-) i...

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  20. Aqueous solution of Nickel sulphate contains Ni^(2+) and SO(4)^(2-) i...

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