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Chemistry

Chemistry
Percentage of carbon in steel ranges from

4.0 to 6.0
0.1 to 1.5
1.5 to 3.0
3.0 to 4.0

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Chemistry
Lead pencil contains

Ferrous sulphide
Lead sulphide
Graphite
Lead

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Chemistry
Which is not a green house gas ?

Chlorofluorocarbons
CH4
N2O
CO2

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Chemistry
Aspirin is chemically known as

Alkylsalicylic acid
Acetylsalicylic acid
Hydroxysalicylate
Methyl salicylate

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Chemistry
Match the sourc in Column B with the product of Column A. (Product) Column B (Source)A. Formic acid1. LemonB. Citric acid 2. TamarindC. Tartaric acid3. Ants

A B C 2 1 3
A B C 2 3 1
A B C 3 1 2
A B C3 2 1

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Chemistry
The important metal used with iron to produce stainless steel is

Chromium
Carbon
Aluminium
Tin

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