1
IIT-JEE 1994
MCQ (Single Correct Answer)
+2
-0.5
Statement (S) The alkali metals can form ionic hydrides which contain the hydride ion H-.
Explanation (E) The alkali metals have low electronegativity; their hydrides conduct electricity when fused and liberate hydrogen at the anode.
A
Both S and E are true and E is the correct explanation of S
B
Both S and E are true but E is not the correct explanation of S
C
S is true but E is false
D
S is false but E is true
2
IIT-JEE 1987
MCQ (Single Correct Answer)
+1
-0.25
The metallic lustre exhibited by sodium is explained by
A
diffusion of sodium ions
B
oscillation of loose electrons
C
excitation of free protons
D
existence of body centered cubic lattice
3
IIT-JEE 1986
MCQ (Single Correct Answer)
+1
-0.25
The pair of compound which cannot exist together in solution is:
A
NaHCO3 and NaOH
B
Na2CO3 and NaHCO3
C
Na2CO3 and NaOH
D
NaHCO3 and NaCl
4
IIT-JEE 1985
MCQ (Single Correct Answer)
+1
-0.25
The oxide that gives hydrogen peroxide on treatment with a dilute acid is
A
PbO2
B
Na2O2
C
MnO2
D
TiO2
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