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1
IIT-JEE 1990
Fill in the Blanks
+1
-0
The shape of [CH3]+ is _____.
2
IIT-JEE 1990
True or False
+1
-0
The presence of polar bonds in a poly-atomic molecule suggests that the molecule has non-zero dipole moment.
A
TRUE
B
FALSE
3
IIT-JEE 1990
MCQ (More than One Correct Answer)
+1
-0.25
When zeolite, which is hydrated sodium aluminium silicate is treated with hard water the sodium ions are exchanged with
A
H+ ions
B
Ca++ ions
C
$$SO_4^{--}$$ ions
D
Mg++ ions
4
IIT-JEE 1990
MCQ (Single Correct Answer)
+1
-0.25
The freezing point of equimolal aqueous solutions will be highest for
A
C6H5NH3Cl (aniline hydrochloride)
B
Ca(NO3)2
C
La(NO3)3
D
C6H12O6 (glucose)

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