Question

9. Select the correct answers: (a) Colour of an aqueous solution of 1. Write the probable colour of the following salts: (a) Ferrous salts (c) Cupric salts (e) Aluminium salts. Gin) Brown Gv) Yellow (1) Green (in) Blue (b) Ammonium salts (d) Calcium salts (b) Colour of the precipitate formen solution to iron (II) sulphates 2. Name : (1) White (ii) Green (11) Brown (v) Pale bio Mole Concept and Cey-Lussac Idea of Avogado (c) A metal which produces bydroca alkali as well as with acid. (1) Iron (11) Zinc (i) Magnem (iv) Copper sos Simple (d) The salt solution which does ammonium hydroxide is cm Refer to (i) Calcium nitrate (in Zinc te The expla (m) Lead nitrate • Dod 10. What do you observe when fresh aluminium hydroxide reacts with custica Give balanced equation 11. You are provided with two reagent bodia B. One contains NH,OH solution and beat NaOH solution. How will you identify the (iv) Mole a • Relo test? (a) a metallic hydroxide soluble in excess of NH,OH. (b) a metallic oxide soluble in excess of caustic soda solution (c) a strong alkali. (d) a weak alkali. (e) two colourless metal ions. (f) two coloured metal ions. (g) a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions. (h) two bases which are not alkalis but dissolve in strong alkalis. (1) a coloured metallic oxide which dissolves in alkalis to yield colourless solutions. () a colourless cation not a representative element. 3. Write balanced equations for Q. 2 (g) and (1). 4. What happens when ammonia solution is added first dropwise and then in excess to the following solutions : (i) CuSO4 (ii) ZnSO4 (iii) FeCl3 Write balanced equations for these reactions. 5. What do you observe when caustic soda solution is added to the following solution, first a little and then in excess: (a) FeCl3, (b) ZnSO4, (c) Pb(NO3)2, (d) CuSO4 ? Write balanced equations for these reactions. 6. Name the chloride of a metal which is soluble in excess of ammonium hydroxide. Write equation for the same. 7. On adding dilute ammonia solution to a colourless solution of a salt, a white gelatinous precipitate appears. This precipitate however dissolves on addition of excess of ammonia solution. Identify (choose from Na. Al, Zn, Pb, Fe) (a) Which metal salt solution was used ? (b) What is the formula of the white gelatinous precipitate obtained ? 8. Name: (a) a yellow monoxide that dissolves in hot and concentrated caustic alkali. (b) a white, insoluble oxide that dissolves when fused with caustic soda or caustic potash. (c) a compound containing zinc in the anion. 12. Distinguish by adding : Sodium by drott ammonium hydroxide solution to (a) Calcium salt solution and lead salt (b) Lead nitrate solution and zinc Sam v) Simp Rela (c) Copper salt solution and ferrous sit (d) Fe(II) salt solution and Fe(III) sa (e) Ferrous nitrate and lead nitrate 13. How will you distinguish lead nitrate i 5.1 INTRO solution ? You 14. What is observed when hot concentric Dehave s solution is added to (a) Zinc and Aemperatu balanced equations Gas 15. (a) What do you understand by me with resp (b) Give the balanced equations for P) or ve two different amphoteric ouides who affects th (c) Name the products formed. Pressu 16. Write balanced equations for the forcow (a) ZnSO. - → ZnOH, (b) Cuso, A COH P For LC.S.E. questions see Chapter 13 68​

Answer 1

Answer:

where are you from

I'm from telangana state

Answer 2

Answer:

the scientific study of the structure of substances and what happens to them in different conditions or when mixed with each other

Explanation:

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