Which one of the following is a mixed fertilizer?

Which one of the following is not an essential micronutrient for plants?

Which one of the following polymers is widely used for making bullet proof material?

Which one of the following fuels causes minimum environmental pollution?

Which of the following statements are true regarding heat?
(a) Heat is a form of energy
(b) Heat can be reflected by a mirror
(c) Heat is an electromagnetic radiation
(d) Heat cannot pass through vacuum

When the temperature of a gas sample filled in a container is increased, its pressure increases. Which of the following are the reasons for it?
(a) Gas molecules exert more force on each other than before.
(b) Gas molecules move faster than before and strike the walls of the container more often.
(c) Each impact of the gas molecules on the walls of the container yields a greater force then before.
(d) Impacts are now distributed over a smaller area.

A system is commonly defined as a group of interacting units or elements that have a common purpose. We call a system as a closed one, when it
(a) has no proper order
(b) exchanges materials with surroundings
(c) does not exchange materials with surroundings
(d) is constantly changing in composition

'Yellow cake', an item of smuggling across border is

There is an immense number of distinct compounds that contain carbon atoms. Some sources suggest that there are about ten million known compounds. The number of carbon atoms in the following compounds vary.
What is the increasing order in which they are present in the compounds?
(a) Butane
(b) Methane
(c) Ethane
(d) Decane

Which one of the following materials is very hard but very ductile at the same time?