1996
JEE Advanced
Numerical
IIT-JEE 1996
Explain the difference in the nature of bonding in LiF and LiI.
Correct Answer: Solve by yourself
1994
JEE Advanced
Numerical
IIT-JEE 1994
Complete and balance the following reactions:
Ca5(PO4)3F + H2SO4 + H2O $\buildrel {Heat} \over \longrightarrow $ ........ + 5CaSO4.2H2O + ........
Ca5(PO4)3F + H2SO4 + H2O $\buildrel {Heat} \over \longrightarrow $ ........ + 5CaSO4.2H2O + ........
Correct Answer: Ca<sub>5</sub>(PO<sub>4</sub>)<sub>3</sub>F + 5H<sub>2</sub>SO<sub>4</sub> + 10H<sub>2</sub>O $$\buildrel {Heat} \over
\longrightarrow $$ 3H<sub>3</sub>PO<sub>4</sub> + 5CaSO<sub>4</sub>.2H<sub>2</sub>O + HF
1991
JEE Advanced
Numerical
IIT-JEE 1991
Write down the balanced equation for the reaction when:
Carbon dioxide is passed through a suspension of lime stone in water.
Carbon dioxide is passed through a suspension of lime stone in water.
Correct Answer: Solve by yourself.
1989
JEE Advanced
Numerical
IIT-JEE 1989
Write down the balanced equation for the reaction when:
Potassium ferricyanide reacts with hydrogen peroxide in basic solution
Potassium ferricyanide reacts with hydrogen peroxide in basic solution
Correct Answer: Solve by yourself
1988
JEE Advanced
Numerical
IIT-JEE 1988
Write down the balanced equation for the reaction when:
Carbon dioxide is passed through a concentrated aqueous solution of sodium chloride saturated with ammonia.
Carbon dioxide is passed through a concentrated aqueous solution of sodium chloride saturated with ammonia.
Correct Answer: Solve by yourself
1987
JEE Advanced
Numerical
IIT-JEE 1987
Give reasons of the following :
Magnesium oxide is used for the lining of steel making furnace.
Magnesium oxide is used for the lining of steel making furnace.
Correct Answer: Do by yourself
1985
JEE Advanced
Numerical
IIT-JEE 1985
Write down the balanced equations for the reaction when:
Calcium phosphate is heated with a mixture of sand and carbon;
Calcium phosphate is heated with a mixture of sand and carbon;
Correct Answer: Solve by yourself
1982
JEE Advanced
Numerical
IIT-JEE 1982
How will you prepare bleaching powder from slaked lime.
Correct Answer: Solve by yourself
1982
JEE Advanced
Numerical
IIT-JEE 1982
Write down the balanced equations for the reaction when:
An alkaline solution of potassium ferricyanide is reacted with hydrogen peroxide.
An alkaline solution of potassium ferricyanide is reacted with hydrogen peroxide.
Correct Answer: Solve by yourself
1981
JEE Advanced
Numerical
IIT-JEE 1981
Give reasons of the following:
Sodium carbonate is made by Solvay process but the same process is not extended to the manufacture of potassium carbonate.
Sodium carbonate is made by Solvay process but the same process is not extended to the manufacture of potassium carbonate.
Correct Answer: Do by yourself
1993
JEE Advanced
Numerical
IIT-JEE 1993
Ca2+ has a small ionic radius than K+ because it has ______.
Correct Answer: higher effective nuclear charge
1989
JEE Advanced
Numerical
IIT-JEE 1989
The electrolysis of molten sodium hydride liberates ____ gas at the _____
Correct Answer: hydrogen, anode
1985
JEE Advanced
Numerical
IIT-JEE 1985
Sodium dissolved in liquid ammonia conducts electricity because ________.
Correct Answer: of solvated electrons
1980
JEE Advanced
Numerical
IIT-JEE 1980
Anhydrous MgCl2 is obtained by hydrated salt with ______.
Correct Answer: Anhydrous HCl
1987
JEE Advanced
MCQ
IIT-JEE 1987
Sodium when burnt in excess of oxygen gives sodium oxide.
A.
TRUE
B.
FALSE
1986
JEE Advanced
MCQ
IIT-JEE 1986
The softness of group I-A metals increases down the group with increasing atomic number.
A.
TRUE
B.
FALSE
1982
JEE Advanced
MCQ
IIT-JEE 1982
MgCl2.6H2O on heating give anhydrous MgCl2
A.
TRUE
B.
FALSE