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प्रश्न
Select the correct answer from the choice in the bracket.
The formula of caustic soda.
विकल्प
KOH
Ca(OH)
NaOH
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उत्तर
NaOH
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संबंधित प्रश्न
On what principle are the following methods of separation based? Give one example of a mixture for each of the methods mentioned in which they are used
Magnetic separation
Give the symbol of the following element:
Zinc
Give the symbol of the following element:
Arsenic
Write the radical of the following valency:
Oxygen
Select the correct answer to the statement given below:
An element present in the earth’s crust, atmosphere and the human body.
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Silver
write symbol with the variable valency
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Hydroxide
Fill in the blank with the correct word from the options given below:
A symbol represents a short form of a / an ________.
The symbol of tungsten is _______.
Which of the following symbols of elements are incorrect? Give their correct symbols
- Cobalt CO
- Carbon c
- Aluminium AL
- Helium He
- Sodium So
