Chemistry - MOST IMPORTANT RRB NTPC Previous Year Questions
Practice real questions from previous year exams of RRB NTPC.
If ammonia is a gas then camphor is a?
The physical state of ordinary substances does not include .......... substances?
The air is a .............?
Which law in science does not follow the properties of a mixture.
When two liquids do not dissolve in each other and do not form a solution, what is it called?
Sugar is a ................ in a sugar solution?
Which of the following is the process of converting sugar into alcohol?
Rusting of iron is a common example of which?
Rusting of iron is a common example of which?
Which of the following is an example of chemical change?
........... is not a chemical change?
What is the name of the process in which gas is directly converted into a solid?
What is the approximate molecular weight of common salt?
In ammonia, nitrogen and hydrogen are present in the ratio by mass.
To find the atomic weight of an element, with which of the following is the atomic weight of that element compared?
Which of the following is commonly used in making solar cells?
Which of the following groups of metals are so soft that they can be cut with a knife and have low densities and low melting point?
Which of the following is an example of a non-metallic mineral?
The elements that have intermediate properties between those of metals and non-metals are called metalloids. Which among the following is known as a metalloid ?
Which of the following is most commonly used as a semiconductor in solar cells?