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BidishaKashayap1333
@bidishakashayap1333
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Joined: Oct 11, 2021
Last seen: Jul 27, 2023
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Topics: 2174 / Replies: 0
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Topic
‘If 100 grams of calcium carbonate(whether in the form of marble or chalk) are decomposed completely, then 56 grams of calcium oxide and 44 grams of carbon dioxide are obtained’.
4 years ago
Forum
Atoms and Molecules
Replies: 0
Views: 82
Topic
‘If 100 grams of pure water taken from different sources is decomposed by passing electricity, 11 grams of hydrogen and 89 grams of oxygen are always obtained’.
4 years ago
Forum
Atoms and Molecules
Replies: 0
Views: 228
Topic
Name any two laws of chemical combination.
4 years ago
Forum
Atoms and Molecules
Replies: 0
Views: 77
Topic
Which ancient Indian philosopher suggested that all matter is composed of very small particles? What name was given by him to these particles?
4 years ago
Forum
Atoms and Molecules
Replies: 0
Views: 97
Topic
Which part of the Dalton’s atomic theory came from the law of constant proportions given by Proust?
4 years ago
Forum
Atoms and Molecules
Replies: 0
Views: 82
Topic
Which postulate of Dalton’s atomic theory is the result of law of conservation of mass given by Lavoisier?
4 years ago
Forum
Atoms and Molecules
Replies: 0
Views: 248
Topic
Name the scientist who gave atomic theory of matter.
4 years ago
Forum
Atoms and Molecules
Replies: 0
Views: 64
Topic
Name the law of chemical combination: (a) Which was given by Lavoisier (b) Which was given by Proust
4 years ago
Forum
Atoms and Molecules
Replies: 0
Views: 230
Topic
Name the scientist who gave: (a) Law of conservation of mass (b) Law of constant proportions
4 years ago
Forum
Atoms and Molecules
Replies: 0
Views: 72
Topic
Write the full form of IUPAC.
4 years ago
Forum
Atoms and Molecules
Replies: 0
Views: 196
Topic
Which of the following does not have a fixed melting point/boiling point? (a) Gold (b) Ethanol (c) Air (d) Oxygen
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 129
Topic
Two chemical substances X and Y combine together to form a product P which contains X and Y X + Y → P X and Y cannot be broken down into simpler substance by simple chemical reactions.
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 163
Topic
Which of the following are homogenous in nature? (i) Ice (ii) wood (iii) Soil (iv) Air
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 300
Topic
Which of the following statement are true for pure substances? (i) Pure substances contain only one kind of particles
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 291
Topic
On the basis of composition of matter, milk is considered to be
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 242
Topic
The property/properties which enable copper metal to be used for making electric wires is/are
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 186
Topic
When a mixture of iron powder and sulphur powder is heated strongly to form iron sulphide, then heat energy is
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 234
Topic
The elements which normally exist in the liquid state are
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 120
Topic
Which one of the following I not a metalloid?
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 99
Topic
”Is malleable and ductile” best describes:
4 years ago
Forum
Is Matter Around Us Pure
Replies: 0
Views: 129
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