A compound of phosphorus oxide has 43.60% of Oxygen. Its empirical formula is
- P502
- P203
- P02
- P205
Under suitable conditions alkanes cannot undergo _____ reactions
- Hydrogenation
- Addition
- Combustion
- Substitution
The addition reaction of 2-butene with HBr produces
- 2-bromobutane
- 1,3-dibromobutane
- 2,3-dibromobutane
- 1-bromobutane
What is the unit of heat capacity
- kj.mol
- kJ/K
- JK-1
- kJmol-1
What is the reason of energy changes in chemical reactions
- Bond formation
- Bond formation and breakage
- Bond breakage
- Ionic bonds
How will be the rate of reaction, if the slope of the curve is greater near the start of the reaction
- Constant
- Equilibrium
- Greater
- Lesser
The rate of reaction between two specific time intervals is called
- Rate of reaction
- Average rate of reaction
- Instantaneous rate of reaction
- Initial rate
In reversible reaction, when product is removed, the equilibrium shift towards the:
- Product side
- Both side one by one
- Reactant side
- No effect
Which one of the following gases has the lowest density under room conditions
- Fluorine
- Neon
- Oxygen
- Nitrogen
What is the proton (atomic number) of an element that has four unpaired electrons in its ground state
- 22
- 26
- 6
- 14
