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Chemistry

Chemistry
What material is used to make electric heater coil ?

Iron
Nichrome
Copper
Silver

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Chemistry
Gelatin is mostly used in making ice–creams in order to

Stabilise the colloid and prevent crystallisation
Enrich the aroma
Prevent making a colloid
Stabilise mixture

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Chemistry
The element used in the manufacture of safety matches is

Magnesium
Sulphur
Silicon
Phosphorous

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Chemistry
The chemical(s) most commonly used for cloud seeding or ‘artificial rainmaking’ is/are

Sodium Chloride
Silver Iodide
Dry ice or frozen carbon dioxide
All listed here

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Chemistry
Carbon footprint can be reduced by

Commuting by public transport
Recycling waste materials
Using energy efficient appliances
All of these

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Chemistry
The number of neutrons present in an element having mass number 226 and atomic number 88 is :

50
88
314
138

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MORE MCQ ON Chemistry

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