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प्रश्न
Select the correct name from the choices given below for the following case.
A chemical used as a preservative for jams, pickles, etc.
विकल्प
Titanium dioxide
Rayon
Benzoic acid
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उत्तर
Benzoic acid
संबंधित प्रश्न
Write True or False against the following statement.
Gunpowder is an insecticide:
State the functions of the following basic glass apparatus:
Hard glass boiling tube
State why a round bottom flask is preferred to a flat bottom flask – during the preparation of gases in the laboratory.
State the function of
The clamp mounted on the rod of a retort stand
‘Alchemists are older words for Chemists’. Discuss the statement in brief.
State what are – ‘stain removals’. Name three important stain removers & give their prime functions.
Select the correct name from the choices given below for the following case.
The branch of Science which deals with the different forms of energy e.g. light and sound.
Select the correct name from the choices given below for the following case.
A substance which dissolves grease & oil and is preferred as a – drain cleaner.
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
For holding washed test tubes
Select the correct apparatus from A, B, or C for the following functions of the apparatus given.
A long glass tube with a broad inlet at the top, which allows entry of the reactants into the round bottom flask, during laboratory preparations of gases.
