Assertion: Aqueous solution of hydrogen peroxide is kept in a glass or metal container containing some urea or phosphoric acid.
Reason: Urea or phosphoric acid acts as a negative catalyst for the decomposition of hydrogen peroxide.
(a)- Both assertion and reason are correct and the reason is the correct explanation for the assertion.
(b)- Both assertion and reason are correct and the reason is not the correct explanation for the assertion.
(c)- Assertion is correct but the reason is incorrect.
(d)- Assertion is incorrect but the reason is correct.

Hint: Hydrogen peroxide is an explosive compound and reacts readily with acids, bases, metals, etc. So there are some special bottles in which the hydrogen peroxide is stored.

Complete step by step answer:
Hydrogen peroxide is a very unstable compound and very easily decomposes to water and oxygen on heating or long-standing. This decomposition is very explosive and can cause serious harm to our bodies and surrounding. So there are some precautions that have to be followed when you are storing hydrogen peroxide for commercial uses. These are as follows:
(i)- Hydrogen peroxide should not be stored in glass bottles because the glass has a rough surface and these have alkali oxides present. So when this is exposed to light, it causes the decomposition of hydrogen peroxide and causes an explosion. That's why hydrogen peroxide is usually stored in colored paraffin wax-coated plastic or Teflon bottles.
(ii)- We can further stop the decomposition of hydrogen peroxide, by adding some stabilizer or negative catalysts such as phosphoric acid, urea, acetanilide, glycerine, etc.
So from the above discussion, we can say that the assertion is wrong because in glass or metal containers the hydrogen peroxide will explode. But the reason is correct.
So, the correct answer is “Option D”.

Note: When the decomposition of hydrogen peroxide takes place the reaction is:
$2{{H}_{2}}{{O}_{2}}\to 2{{H}_{2}}O+{{O}_{2}}$
Hydrogen peroxide in concentrated form is a very thick liquid and has a high viscosity, and it is because of more hydrogen bonding in hydrogen peroxide than water.