Action of Water on Calcium Carbide

Q. the maximum amount of magnesium oxide formed when 16g of Mg is burnt with 16g of O2 in a closed vessel is

Q. Which of the following is a mixture?

1. Distilled water
2. Gasoline
3. Both A and B
4. Neither A nor B

Q. 8. 24 gm pure sample of magnesium is burned in air to form magnesium oxide and magnesium nitride. When products are treated with excess of H2O, 3.4 gm of gaseous NH3 is generated according to given reactions. Mg + O2 → MgO Mg + N2 → Mg3N2 Mg3N2 + 6H2O → 3Mg(OH)2 + 2NH3 Calculate the amount of magnesium oxide (in gm) in products

Q. 25. The chemical and the reaction conditions required for the preparation of ethane are (A)C2H5I, Zn-Cu/C2H5OH (B)CH3COONa, NaOH, CaO, Δ

Q.

A solution of $FeC{l}_3$ in water acts as acidic due to

1. Hydrolysis of Fe³⁺

2. Acidic impurities

3. Dissociation

4. Ionisation

Q. Criss cross method of hydrogen peroxide

Q. preparation of hydrogen peroxide

Q. Which gives $C{H}_4$ when treated with water

1. Silicon carbide
2. Calcium carbide
3. Aluminium carbide
4. Iron carbide

Q. 38. What are the condition for the formation of BHC and HBC when benzene is halogenated with chlorine?

Q. If three moles of nitrogen reacts with ten moles of hydrogen , then how many moles of ammonia will form?

Q. 58 When CO2 is passed through solution of calcium hydroxide, which on of the following compound is precipitated?and why? (A) calcium bicarbonate (B) calcium hydroxide (C) calcium carbonate (D) calcium oxide

Q. Which gas is produced by reaction of calcium carbide with water?

1. acetylene
2. methane
3. oxygen
4. hydrogen

Q. hydration reaction through markovnikov and antimarkovnikov rule of alken

Q. Lindlars catalyst

Q.

During the electrolysis of aqueous solution of sodium acetate, the nature of solution left in the vessel and its $P^H$ is

1. Neutral and 7

2. Basic and > 7

3. Acidic and < 7

4. Basic and < 7

Q.

A metallic carbide on treatment with water gives a colourless gas which burns readily in air and which gives a precipitate with ammonical silver nitrate solution. Gas evolved is

1. Methane
2. Ethane
3. Acetylene
4. Ethylene

Q. Which of the following is a mixture?

1. Both A and B
2. Gasoline
3. Neither A nor B
4. Distilled water

Q. Which gas is produced by reaction of calcium carbide with water?

1. acetylene
2. methane
3. oxygen
4. hydrogen

Q.

in order to prevent the decomposition of hydrogen peroxide into water and oxygen what stabilizer is added?

a- Bakelite

b- nitrite

c- phosphate

d- carbonate

Q. Formation of acetylene from calcium acetylide can be represented as
$C{a}^{2+}C\equiv C^{2-}+2H_{2}O\to H-C\equiv C-H+2O{H}^{-}+C{a}^{2+}$

1. The stronger acid (acetylene) is displaced from its salt by a relatively weaker acid (water)
2. The weaker acid (acetylene) is displaced from its salt by a relatively stronger acid (water)
3. The weak acid (acetylene) is displaced from its salt by anothr weaker acid (water).
4. The weaker acid (acetylene) is displaced from its salt by neutral substance (water)

Q.

one mole of calcium phophide on reaction with excess of water gives

Q. when water id added to compound a of calcium solution of compound b is formed.when co2 is passed into the solution it turns milky due to the formation of compound c.if excess of co2 is passed into it solution milkiness disppears due to formation of compound d . identify a, b, c, d.explain why milkiness disappears.