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Chemistry
List of top Chemistry Questions
Pure nitrogen is prepared in the laboratory by heating a mixture of
NEET (UG) - 1991
NEET (UG)
Chemistry
p -Block Elements
$PH_4I + NaOH$
forms
NEET (UG) - 1991
NEET (UG)
Chemistry
p -Block Elements
On hydrolysis of starch, we finally get
NEET (UG) - 1991
NEET (UG)
Chemistry
Biomolecules
The transition elements have a general electronic configuration.
NEET (UG) - 1991
NEET (UG)
Chemistry
d -and f -Block Elements
Which would quickly absorb oxygen?
NEET (UG) - 1991
NEET (UG)
Chemistry
p -Block Elements
Oleum is
NEET (UG) - 1991
NEET (UG)
Chemistry
p -Block Elements
Phosphine may be produced by adding lo water some
KCET - 1991
KCET
Chemistry
p -Block Elements
The relative lowering of the vapour pressure is equal to the ratio between the number of
NEET (UG) - 1991
NEET (UG)
Chemistry
Solutions
In a closed flask of 5 L, 1.0 g of
$H_2$
is heated from 300 to 600 K. Which statement is not correct?
NEET (UG) - 1991
NEET (UG)
Chemistry
States of matter
In compound ' X - all the bond angles are exactly 109
$^{\circ}$
28', 'X - is
NEET (UG) - 1991
NEET (UG)
Chemistry
Chemical bonding and molecular structure
Which overlap is involved in HCl molecule ?
KCET - 1991
KCET
Chemistry
Chemical bonding and molecular structure
The oxidation state of the most electronegative element in the products of the reaction.
$ BaO_2 $
with dil,
$ H_2SO_4 $
are
JEE Advanced - 1991
JEE Advanced
Chemistry
GROUP 1 ELEMENTS
The reaction which proceed in the forward direction is
JEE Advanced - 1991
JEE Advanced
Chemistry
d block elements
Natural rubber is a polymer of
AIIMS - 1991
AIIMS
Chemistry
Polymers
As the atomic number of halogens increases the halogens
MP PMT - 1991
MP PMT
Chemistry
p -Block Elements
AgCl dissolves in
$NH_4OH$
due to the formation of
AIIMS - 1991
AIIMS
Chemistry
coordination compounds
Which of the following is the most stable carbocation (carbonium ion)?
AIPMT - 1991
AIPMT
Chemistry
Organic Chemistry
Isomers of a substance must have the same
AIPMT - 1991
AIPMT
Chemistry
Organic Chemistry
Glass is a
AIPMT - 1991
AIPMT
Chemistry
p -Block Elements
The reagents,
$NH_4Cl$
and aqueous
$NH_3$
will precipitate
JEE Advanced - 1991
JEE Advanced
Chemistry
Organic Chemistry
There is no S- S bond in
JEE Advanced - 1991
JEE Advanced
Chemistry
p -Block Elements
According to kinetic theory of gases, for a diatomic molecule
JEE Advanced - 1991
JEE Advanced
Chemistry
States of matter
1 -chlorobutane on reaction with alcoholic potash gives
JEE Advanced - 1991
JEE Advanced
Chemistry
Haloalkanes and Haloarenes
The linear structure assumed by
JEE Advanced - 1991
JEE Advanced
Chemistry
Chemical bonding and molecular structure
The tendency of
\(BF_3, BCI_3 \, and \, BBr_3\)
behave as Lewis acid decreases in the sequence
NEET (UG) - 1990
NEET (UG)
Chemistry
Acids and Bases
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