-
- cathode
- iron
- laser
- isotopes
Pyrolusite is the _____.
-
- ore of copper
- ore of lead
- ore of manganese
- ore of potassium
The atomic state of an element as a result of chemical reaction in which it is more active than in ordinary molecular state is called _____.
-
- critical state
- nacent state
- nuclear state
- neutral state
A property of some substances of absorbing moisture from the air on exposure is called _____.
-
- desiccation
- dimorphism
- efflorescence
- deliquescence
The substance which acts both as a base and as an acid under different circumstances is called _____.
-
- amorphous
- halogen
- amphoteric
- cation
A mixture of concentrated nitric and hydrochloric acids in the ration 1:3 is called _____.
-
- aquasol
- aqua regia
- aqua fortis
- aqua culture
Similarity of crystalline form, indicating similar or analogous chemical composition is called _____.
-
- Mercapatan
- Isomerism
- Allotropy
Which of the following statements is not correct about oxidation?
-
- Process involving addition of Oxygen
- Process involving removal of Oxygen
- Process involving removal of Hydrogen
- Process involving removal of electropositive radical atom
Chemical union of two or more molecules of the same compound to form larger molecules is called _____.
-
- Polymerization
- Oxidation
- Chemical change
- Sublimation
A substance which changes readily into vapour without heating is called _____.
-
- Volatile
- Synthetic
- Effervescent
- Efflorescent
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