Chemistry - MOST IMPORTANT RRB NTPC Previous Year Questions
Practice real questions from previous year exams of RRB NTPC.
📘 Physical States of Matter and Their properties📚 Solid
Q1
If ammonia is a gas then camphor is a?
🎯 RRB NTPC 11.04.2016 (Shift-II) Stage It
📘 Physical States of Matter and Their properties📚 Misc
Q2
The physical state of ordinary substances does not include .......... substances?
🎯 RRB NTPC 17.01.2017 (Shift-II) Stage Ist
📘 Classification of Matter on the basis of Chemical Properties- I📚 Mixture (Impure substance)- Homogeneous and Heterogeneous
Q3
The air is a .............?
🎯 RRB NTPC 11.04.2016 (Shift-II) Stage It
📘 Classification of Matter on the basis of Chemical Properties- I📚 Mixture (Impure substance)- Homogeneous and Heterogeneous
Q4
Which law in science does not follow the properties of a mixture.
🎯 RRB NTPC 17.01.2017 (Shift-II) Stage Ist
📘 Solution📚 Solubility and Factors affecting Solubility
Q5
When two liquids do not dissolve in each other and do not form a solution, what is it called?
🎯 RRB NTPC 12.04.2016 (Shift-III) Stage Ist
📘 Solution📚 Solvent and Solute
Q6
Sugar is a ................ in a sugar solution?
🎯 RRB NTPC 18.04.2016 (Shift-II) Stage Ist
📘 Chemical Reactions📚 Chemical change
Q7
Which of the following is the process of converting sugar into alcohol?
🎯 RRB NTPC 12.01.2021 (Shift-I) Stage Ist
📘 Chemical Reactions📚 Chemical change
Q8
Rusting of iron is a common example of which?
🎯 RRB NTPC 07.04.2016 (Shift-II) Stage Ist
📘 Chemical Reactions📚 Chemical change
Q9
Rusting of iron is a common example of which?
🎯 RRB NTPC 18.01.2017 (Shift-II) Stage IInd
📘 Chemical Reactions📚 Neutralization Reaction
Q10
Which of the following is an example of chemical change?
🎯 RRB NTPC 28.03.2016 (Shift-III) Stage Ist
📘 Chemical Reactions📚 Chemical change
Q11
........... is not a chemical change?
🎯 RRB NTPC 11.04.2016 (Shift-II) Stage Ist
📘 Phase Changing Processes and Their Factors📚 Deposition
Q12
What is the name of the process in which gas is directly converted into a solid?
🎯 RRB NTPC 16.04.2016 (Shift-III) Stage Ist
📘 Mole Concept📚 Molecular Mass
Q13
What is the approximate molecular weight of common salt?
🎯 RRB NTPC (Stage-II) –13/06/2022 (Shift-II)
📘 Laws of Chemical Combinations📚 Laws of Definite Proportions
Q14
In ammonia, nitrogen and hydrogen are present in the ratio by mass.
🎯 RRB NTPC (State-II) 17/06/2022 (Shift-II)
📘 Structure of Atom📚 Atomic Mass
Q15
To find the atomic weight of an element, with which of the following is the atomic weight of that element compared?
🎯 RRB NTPC 28.03.2016 (Shift-I) Stage Ist
📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Metalloids
Q16
Which of the following is commonly used in making solar cells?
🎯 RRB NTPC (Stage-II) –16/06/2022 (Shift-II)
📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Metals and its properties
Q17
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?
🎯 RRB NTPC (State-II) 15/06/2022 (Shift-II)
📘 Pure Substance- Compound-Classification of Matter on the basis of Chemical Properties- II📚 Inorganic Compound
Q18
Which of the following is an example of a non-metallic mineral?
🎯 RRB NTPC (Stage-II) 15/06/2022 (Shift-III)
📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Metalloids
Q19
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 ?
🎯 RRB NTPC 13.03.2021 (Shift-I) Stage Ist
📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Metalloids
Q20
Which of the following is most commonly used as a semiconductor in solar cells?
🎯 RRB NTPC 05.03.2021 (Shift-II) Stage Ist