190028
An inorganic salt \((A)\) is decomposed on heating to give two products \((B)\) and \((C)\). Compound \((C)\) is a liquid at room temperature and is neutral to litmus while the compound \((B)\) is a colourless neutral gas. Compounds \((A)\), \((B)\) and \((C)\) are
1 \(NH_4NO_3,\,N_2O,\,H_2O\)
2 \(NH_4NO_2,\,NO,\,H_2O\)
3 \(CaO,\,H_2O,\,CaCl_2\)
4 \(Ba(NO_3)_2,\,H_2O,\,NO_2\)
Explanation:
Reaction involved is : \(\mathop {N{H_4}N{O_3}\,}\limits_A \xrightarrow{\Delta }\,\mathop {{N_2}O}\limits_B \, + \,\mathop {2{H_2}O}\limits_C\) Hence option \((a)\) is correct.
11. THE P-BLOCK ELEMENTS
190029
Which of the following oxides is strongly basic ?
1 \(B_2O_3\)
2 \(Al_2O_3\)
3 \(Ga_2O_3\)
4 \(Tl_2O_3\)
Explanation:
The correct sequence of increasing basic strength is \(B_2O_3 < Al_2O_3 < Ga_2O_3 < In_2O_3 < Tl_2O_3\)
11. THE P-BLOCK ELEMENTS
190030
Chemically borax is
1 Sodium metaborate
2 Sodium orthoborate
3 Sodium tetraborate
4 Sodium tetraborate decahydrate
Explanation:
Chemically borax is sodium tetraborate decahydrate and it has the formula \(Na_2B_4O_7.10H_2O\).
11. THE P-BLOCK ELEMENTS
190031
The liquefied metal which expands on solidification is
1 \(Ga\)
2 \(Al\)
3 \(Zn\)
4 \(In\)
Explanation:
Gallium \((Ga)\) is soft , silvery metal. Its melting point is \(30\,^oC\). This metal expands by \(3.1\%\) when it solidifies and hence, it should not be stored in glass or metal containers.
NEET Test Series from KOTA - 10 Papers In MS WORD
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11. THE P-BLOCK ELEMENTS
190028
An inorganic salt \((A)\) is decomposed on heating to give two products \((B)\) and \((C)\). Compound \((C)\) is a liquid at room temperature and is neutral to litmus while the compound \((B)\) is a colourless neutral gas. Compounds \((A)\), \((B)\) and \((C)\) are
1 \(NH_4NO_3,\,N_2O,\,H_2O\)
2 \(NH_4NO_2,\,NO,\,H_2O\)
3 \(CaO,\,H_2O,\,CaCl_2\)
4 \(Ba(NO_3)_2,\,H_2O,\,NO_2\)
Explanation:
Reaction involved is : \(\mathop {N{H_4}N{O_3}\,}\limits_A \xrightarrow{\Delta }\,\mathop {{N_2}O}\limits_B \, + \,\mathop {2{H_2}O}\limits_C\) Hence option \((a)\) is correct.
11. THE P-BLOCK ELEMENTS
190029
Which of the following oxides is strongly basic ?
1 \(B_2O_3\)
2 \(Al_2O_3\)
3 \(Ga_2O_3\)
4 \(Tl_2O_3\)
Explanation:
The correct sequence of increasing basic strength is \(B_2O_3 < Al_2O_3 < Ga_2O_3 < In_2O_3 < Tl_2O_3\)
11. THE P-BLOCK ELEMENTS
190030
Chemically borax is
1 Sodium metaborate
2 Sodium orthoborate
3 Sodium tetraborate
4 Sodium tetraborate decahydrate
Explanation:
Chemically borax is sodium tetraborate decahydrate and it has the formula \(Na_2B_4O_7.10H_2O\).
11. THE P-BLOCK ELEMENTS
190031
The liquefied metal which expands on solidification is
1 \(Ga\)
2 \(Al\)
3 \(Zn\)
4 \(In\)
Explanation:
Gallium \((Ga)\) is soft , silvery metal. Its melting point is \(30\,^oC\). This metal expands by \(3.1\%\) when it solidifies and hence, it should not be stored in glass or metal containers.
190028
An inorganic salt \((A)\) is decomposed on heating to give two products \((B)\) and \((C)\). Compound \((C)\) is a liquid at room temperature and is neutral to litmus while the compound \((B)\) is a colourless neutral gas. Compounds \((A)\), \((B)\) and \((C)\) are
1 \(NH_4NO_3,\,N_2O,\,H_2O\)
2 \(NH_4NO_2,\,NO,\,H_2O\)
3 \(CaO,\,H_2O,\,CaCl_2\)
4 \(Ba(NO_3)_2,\,H_2O,\,NO_2\)
Explanation:
Reaction involved is : \(\mathop {N{H_4}N{O_3}\,}\limits_A \xrightarrow{\Delta }\,\mathop {{N_2}O}\limits_B \, + \,\mathop {2{H_2}O}\limits_C\) Hence option \((a)\) is correct.
11. THE P-BLOCK ELEMENTS
190029
Which of the following oxides is strongly basic ?
1 \(B_2O_3\)
2 \(Al_2O_3\)
3 \(Ga_2O_3\)
4 \(Tl_2O_3\)
Explanation:
The correct sequence of increasing basic strength is \(B_2O_3 < Al_2O_3 < Ga_2O_3 < In_2O_3 < Tl_2O_3\)
11. THE P-BLOCK ELEMENTS
190030
Chemically borax is
1 Sodium metaborate
2 Sodium orthoborate
3 Sodium tetraborate
4 Sodium tetraborate decahydrate
Explanation:
Chemically borax is sodium tetraborate decahydrate and it has the formula \(Na_2B_4O_7.10H_2O\).
11. THE P-BLOCK ELEMENTS
190031
The liquefied metal which expands on solidification is
1 \(Ga\)
2 \(Al\)
3 \(Zn\)
4 \(In\)
Explanation:
Gallium \((Ga)\) is soft , silvery metal. Its melting point is \(30\,^oC\). This metal expands by \(3.1\%\) when it solidifies and hence, it should not be stored in glass or metal containers.
190028
An inorganic salt \((A)\) is decomposed on heating to give two products \((B)\) and \((C)\). Compound \((C)\) is a liquid at room temperature and is neutral to litmus while the compound \((B)\) is a colourless neutral gas. Compounds \((A)\), \((B)\) and \((C)\) are
1 \(NH_4NO_3,\,N_2O,\,H_2O\)
2 \(NH_4NO_2,\,NO,\,H_2O\)
3 \(CaO,\,H_2O,\,CaCl_2\)
4 \(Ba(NO_3)_2,\,H_2O,\,NO_2\)
Explanation:
Reaction involved is : \(\mathop {N{H_4}N{O_3}\,}\limits_A \xrightarrow{\Delta }\,\mathop {{N_2}O}\limits_B \, + \,\mathop {2{H_2}O}\limits_C\) Hence option \((a)\) is correct.
11. THE P-BLOCK ELEMENTS
190029
Which of the following oxides is strongly basic ?
1 \(B_2O_3\)
2 \(Al_2O_3\)
3 \(Ga_2O_3\)
4 \(Tl_2O_3\)
Explanation:
The correct sequence of increasing basic strength is \(B_2O_3 < Al_2O_3 < Ga_2O_3 < In_2O_3 < Tl_2O_3\)
11. THE P-BLOCK ELEMENTS
190030
Chemically borax is
1 Sodium metaborate
2 Sodium orthoborate
3 Sodium tetraborate
4 Sodium tetraborate decahydrate
Explanation:
Chemically borax is sodium tetraborate decahydrate and it has the formula \(Na_2B_4O_7.10H_2O\).
11. THE P-BLOCK ELEMENTS
190031
The liquefied metal which expands on solidification is
1 \(Ga\)
2 \(Al\)
3 \(Zn\)
4 \(In\)
Explanation:
Gallium \((Ga)\) is soft , silvery metal. Its melting point is \(30\,^oC\). This metal expands by \(3.1\%\) when it solidifies and hence, it should not be stored in glass or metal containers.