189688
During metallurgy of aluminium bauxite is dissolved in cryolite because
1 Bauxite is non-electrolyte
2 Cryolite is a flux
3 Cryolite acts as an electrolyte
4 All are correct
Explanation:
It’s Obvious.
11. THE P-BLOCK ELEMENTS
189689
For the electrolytic refining of aluminium, the three fused layers consist ofBottom Layer
Middle Layer
Upper Layer
1 Cathode of pure \(Al\)
Cryolite and fluorspar
Anode of \(Al\) and \(Cu\) alloy
2 Cathode of \(Al\) and \(Cu\) alloy
Bauxite and cryolite
Anode of pure \(Al\)
3 Anode of \(Al\) and \(Cu\) alloy
Cryolite and barium fluoride
Cathode of pure \(Al\)
4 Anode of impure \(Al\)
Bauxite, cryolite and fluorspar
Cathode of pure \(Al\)
Explanation:
It’s Obvious.
11. THE P-BLOCK ELEMENTS
189690
Heating an aqueous solution of aluminium chloride to dryness will give
1 \(AlC{l_3}\)
2 \(A{l_2}C{l_6}\)
3 \(A{l_2}{O_3}\)
4 \(Al(OH)C{l_2}\)
Explanation:
Aqueous solution of \(AlCl _3\) is acidic as it gives \(HCL\) on hydrolysis. \(AlCl _3+3 H _2 O \rightarrow Al ( OH )_3+ HCl\) On strongly heating \(Al ( OH )_3\) is converted into \(Al _2 O _3\). \(Al ( OH )_3 \rightarrow Al _2 O _3+3 H _2 O\) \(AlCl _3\) on heating gives \(Al _2 O _3\).
11. THE P-BLOCK ELEMENTS
189691
The structure of diborane \(({B_2}{H_6})\) contains
1 Four \(2c\) - \(2e\) bonds and two \(3c\) - \(2e\) bonds
2 Two \(2c\) - \(2e\) bonds and four \(3c\) - \(2e\) bonds
3 Two \(2c\) - \(2e\) bonds and two \(3c\) - \(3e\) bonds
4 Four \(2c\) - \(2e\) bonds and four \(3c\) - \(2e\) bonds
189688
During metallurgy of aluminium bauxite is dissolved in cryolite because
1 Bauxite is non-electrolyte
2 Cryolite is a flux
3 Cryolite acts as an electrolyte
4 All are correct
Explanation:
It’s Obvious.
11. THE P-BLOCK ELEMENTS
189689
For the electrolytic refining of aluminium, the three fused layers consist ofBottom Layer
Middle Layer
Upper Layer
1 Cathode of pure \(Al\)
Cryolite and fluorspar
Anode of \(Al\) and \(Cu\) alloy
2 Cathode of \(Al\) and \(Cu\) alloy
Bauxite and cryolite
Anode of pure \(Al\)
3 Anode of \(Al\) and \(Cu\) alloy
Cryolite and barium fluoride
Cathode of pure \(Al\)
4 Anode of impure \(Al\)
Bauxite, cryolite and fluorspar
Cathode of pure \(Al\)
Explanation:
It’s Obvious.
11. THE P-BLOCK ELEMENTS
189690
Heating an aqueous solution of aluminium chloride to dryness will give
1 \(AlC{l_3}\)
2 \(A{l_2}C{l_6}\)
3 \(A{l_2}{O_3}\)
4 \(Al(OH)C{l_2}\)
Explanation:
Aqueous solution of \(AlCl _3\) is acidic as it gives \(HCL\) on hydrolysis. \(AlCl _3+3 H _2 O \rightarrow Al ( OH )_3+ HCl\) On strongly heating \(Al ( OH )_3\) is converted into \(Al _2 O _3\). \(Al ( OH )_3 \rightarrow Al _2 O _3+3 H _2 O\) \(AlCl _3\) on heating gives \(Al _2 O _3\).
11. THE P-BLOCK ELEMENTS
189691
The structure of diborane \(({B_2}{H_6})\) contains
1 Four \(2c\) - \(2e\) bonds and two \(3c\) - \(2e\) bonds
2 Two \(2c\) - \(2e\) bonds and four \(3c\) - \(2e\) bonds
3 Two \(2c\) - \(2e\) bonds and two \(3c\) - \(3e\) bonds
4 Four \(2c\) - \(2e\) bonds and four \(3c\) - \(2e\) bonds
189688
During metallurgy of aluminium bauxite is dissolved in cryolite because
1 Bauxite is non-electrolyte
2 Cryolite is a flux
3 Cryolite acts as an electrolyte
4 All are correct
Explanation:
It’s Obvious.
11. THE P-BLOCK ELEMENTS
189689
For the electrolytic refining of aluminium, the three fused layers consist ofBottom Layer
Middle Layer
Upper Layer
1 Cathode of pure \(Al\)
Cryolite and fluorspar
Anode of \(Al\) and \(Cu\) alloy
2 Cathode of \(Al\) and \(Cu\) alloy
Bauxite and cryolite
Anode of pure \(Al\)
3 Anode of \(Al\) and \(Cu\) alloy
Cryolite and barium fluoride
Cathode of pure \(Al\)
4 Anode of impure \(Al\)
Bauxite, cryolite and fluorspar
Cathode of pure \(Al\)
Explanation:
It’s Obvious.
11. THE P-BLOCK ELEMENTS
189690
Heating an aqueous solution of aluminium chloride to dryness will give
1 \(AlC{l_3}\)
2 \(A{l_2}C{l_6}\)
3 \(A{l_2}{O_3}\)
4 \(Al(OH)C{l_2}\)
Explanation:
Aqueous solution of \(AlCl _3\) is acidic as it gives \(HCL\) on hydrolysis. \(AlCl _3+3 H _2 O \rightarrow Al ( OH )_3+ HCl\) On strongly heating \(Al ( OH )_3\) is converted into \(Al _2 O _3\). \(Al ( OH )_3 \rightarrow Al _2 O _3+3 H _2 O\) \(AlCl _3\) on heating gives \(Al _2 O _3\).
11. THE P-BLOCK ELEMENTS
189691
The structure of diborane \(({B_2}{H_6})\) contains
1 Four \(2c\) - \(2e\) bonds and two \(3c\) - \(2e\) bonds
2 Two \(2c\) - \(2e\) bonds and four \(3c\) - \(2e\) bonds
3 Two \(2c\) - \(2e\) bonds and two \(3c\) - \(3e\) bonds
4 Four \(2c\) - \(2e\) bonds and four \(3c\) - \(2e\) bonds
189688
During metallurgy of aluminium bauxite is dissolved in cryolite because
1 Bauxite is non-electrolyte
2 Cryolite is a flux
3 Cryolite acts as an electrolyte
4 All are correct
Explanation:
It’s Obvious.
11. THE P-BLOCK ELEMENTS
189689
For the electrolytic refining of aluminium, the three fused layers consist ofBottom Layer
Middle Layer
Upper Layer
1 Cathode of pure \(Al\)
Cryolite and fluorspar
Anode of \(Al\) and \(Cu\) alloy
2 Cathode of \(Al\) and \(Cu\) alloy
Bauxite and cryolite
Anode of pure \(Al\)
3 Anode of \(Al\) and \(Cu\) alloy
Cryolite and barium fluoride
Cathode of pure \(Al\)
4 Anode of impure \(Al\)
Bauxite, cryolite and fluorspar
Cathode of pure \(Al\)
Explanation:
It’s Obvious.
11. THE P-BLOCK ELEMENTS
189690
Heating an aqueous solution of aluminium chloride to dryness will give
1 \(AlC{l_3}\)
2 \(A{l_2}C{l_6}\)
3 \(A{l_2}{O_3}\)
4 \(Al(OH)C{l_2}\)
Explanation:
Aqueous solution of \(AlCl _3\) is acidic as it gives \(HCL\) on hydrolysis. \(AlCl _3+3 H _2 O \rightarrow Al ( OH )_3+ HCl\) On strongly heating \(Al ( OH )_3\) is converted into \(Al _2 O _3\). \(Al ( OH )_3 \rightarrow Al _2 O _3+3 H _2 O\) \(AlCl _3\) on heating gives \(Al _2 O _3\).
11. THE P-BLOCK ELEMENTS
189691
The structure of diborane \(({B_2}{H_6})\) contains
1 Four \(2c\) - \(2e\) bonds and two \(3c\) - \(2e\) bonds
2 Two \(2c\) - \(2e\) bonds and four \(3c\) - \(2e\) bonds
3 Two \(2c\) - \(2e\) bonds and two \(3c\) - \(3e\) bonds
4 Four \(2c\) - \(2e\) bonds and four \(3c\) - \(2e\) bonds
