Classification of Matter
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Q. Liquefied petroleum gas is used in kitchens. When the gas is in a cylinder, it is in the liquid state. When it comes out of the cylinder it becomes a gas (change A), then it burns (change B). Identify the processes A and B with proper explanation.
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Why can you smell the perfume of incense stick ?
Q. Tabulate the differences in the characteristics of states of matter.
Q. Liquefied petroleum gas is used in kitchens. When the gas is in a cylinder, it is in the liquid state. When it comes out of the cylinder it becomes a gas (change A), then it burns (change B). Identify the processes A and B with proper explanation.
Q. Tabulate the differences in the characteristics of states of matter.
Q. Which of the following gives the correct increasing order of acidic strength?
- Water < Acetic acid < Hydrochloric acid
- Water < Hydrochloric acid < Acetic acid
- Acetic acid < Water < Hydrochloric acid
- Hydrochloric acid < Water < Acetic acid
Q. Substance X:
(I) reacts with H2S to produce white turbidity.
(II) changes light green solution of FeSO4 into yellow colour.
(III) reacts with moisture to give pungent smelling gas.
Hence X is:
(I) reacts with H2S to produce white turbidity.
(II) changes light green solution of FeSO4 into yellow colour.
(III) reacts with moisture to give pungent smelling gas.
Hence X is:
- KMnO4
- K2Cr2O7
- SO2
- CaOCl2