Pneumonia leads to problems in breathing and respiration. Give reason to this.

On strong heating lead nitrate gives :

Not all copulations lead to pregnancy. Give reason.

Morphine narcotics are called opiates. Give reason.

Iodine is a solid whereas other halogens are gases. Give reasons .

Assertion : Streptococcus pneumoniae and Haemophilus influenzae are responsible for causing infectious disease in human beings. Reason : A healthy person acquires the infection by inhaling the droplets/aerosols released by an infected person.

Arrange water,ethanol and phenol in the increasing order of acidity and give reason for it ?

According to Arrherius equation, rate of reaction increases with increase in temp. Give reasons.

Sodium acetate solution is alkaline. Give reason.