For NH 2 OH · HCl + NaNO 2 → X → Cu Y + A g ; which of the following is correct ?

A is a colourless, diamagnetic gas which combines with aluminium on heating

A can be produced by action of (Zn + NaOH) on NaNO 2

A is a pink coloured , paramagnetic gas

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Alum is found to contain hydrated monovalent cation ${[M {(H_{2} O)}_{6}]}^{+},$ trivalent cation ${[M^{'} {(H_{2} O)}_{6}]}^{3 +}$ and ${SO}_{4}^{2 -}$ in the ratio of:

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Important Questions on The p-Block Elements-Group 13 (Boron Family)

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Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

In the structure of borax, the numbers of boron atoms and B - O - B units, respectively, are

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

Which alloy is used to make an aircraft?

HARD

Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

The crystalline form of borax has

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

Which components are used in the preparation of scientific balance and light instruments?

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Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

The alloy used in the construction of aircrafts is:

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

Give the composition and uses of the following alloy.
Duralumin

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

A non-metallic element of Group-

13

, used in making bullet-proof vest is

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

Give reactions to justify amphoteric nature of gallium.

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

Write the name of the alloy which is used in gallium thermometer.

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

For

{NH}_{2} OH \cdot HCl + {NaNO}_{2} \to X \overset{Cu}{\to} Y + A (g)

; which of the following is correct ?

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

Aluminium is not used:

HARD

Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

Which element of Group-

13

is used as a control rod in nuclear reactor and also used in making bullet-proof vest?

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Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

Give reason why aluminium alloys are used to make aircraft body.

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

The alloy of an element that is used in high temperature thermometer is

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Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

List some uses of boron and its compounds.

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Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

The element which exists in liquid state for a wide range of temperature and can be used for measuring high temperature is

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Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

Aluminium oxide exists in nature as gems with different colours. The reason for the difference in colour is that:

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

Which of the following metals is used in aircraft construction?

EASY

Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

Cotyledons are also called-

MEDIUM

Chemistry>Inorganic Chemistry>The p-Block Elements-Group 13 (Boron Family)>Uses of Boron and Aluminium and Their Compounds

Aluminium is used for making alloys because of its

Alum is found to contain hydrated monovalent cation MH2O6+, trivalent cation M'H2O63+ and SO42- in the ratio of:

Important Questions on The p-Block Elements-Group 13 (Boron Family)

Learn and Prepare for any exam you want !

Alum is found to contain hydrated monovalent cation ${[M {(H_{2} O)}_{6}]}^{+},$ trivalent cation ${[M^{'} {(H_{2} O)}_{6}]}^{3 +}$ and ${SO}_{4}^{2 -}$ in the ratio of: