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Chemistry

Chemistry
The molecular formula of phosphorous is

P1
P3
P4
P2

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Chemistry
Haloarenes are more stable than haloalkanes due to

Resonance effect
Inductive effect
Hyper conjugative effect
All of them

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Chemistry
Lead pencil contains

Ferrous sulphide
Lead sulphide
Graphite
Lead

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Chemistry
Periodic table contains how many groups

19
18
17
16

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Chemistry
The heat energy produced when the human body metabolises 1 gram of fat is

1 KJ
39 KJ
29 KJ
30 KJ

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Chemistry
Which of the following has pH value 7?

Pure Water
HCl
H2SO4
Sodium Carbonate

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