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Chemistry

Chemistry
Lead in water can cause

Hair falling
Kidney damage
Arthritis
Eye disease

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Chemistry
The fundamental particles present in the nucleus of an atom are

Electron, proton
Proton, neutron
Neutron, positron
Neutron, electron

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Chemistry
Match the List-I with List-II and select the correct answer using the codes given below the listsList-I (Green house gas)List-II(Major source)F.Carbondioxide1.Enteric fermentation in cattleG.Methane2.Burning of fossilH.Chloroflro carbons3.Mercury compounds in waste waterJ.Nitrous oxide4.Nylon production 5.Air conditioner and refrigeration unitsCodes :FGHJA.2154B.3421C.3241D.1234

B
A
C
D

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Chemistry
Which of the following is the maximum number of electrons that can be present in M-shell?

18
32
2
8

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Chemistry
Stainless steel is usually made by alloying the steel with

Copper and chromium
Manganese and copper
Chromium and nickel
Copper and nickel

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Chemistry
Silver halides are used in photographic plates because they are

Totally colourless
Oxidised in air
Reduced by light
Soluble in hyposolution

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