Chemistry - MOST IMPORTANT RRB Group D Previous Year Questions
Practice real questions from previous year exams of RRB Group D.
📘 Physical States of Matter and Their properties📚 Solid
Q1
In which of the following states of the matter molecules have maximum attraction force?
🎯 RRB Group-D 23-10-2018 (Shift-II)
📘 Physical States of Matter and Their properties📚 Solid
Q2
Which of the following is true with respect to particles of solid?
🎯 RRB Group-D 06-12-2018 (Shift-III)
📘 Physical States of Matter and Their properties📚 Misc
Q3
How many states of matter have been determined by scientists so far?
🎯 RRB Group-D 01-10-2018 (Shift-II)
📘 Physical States of Matter and Their properties📚 Gas
Q4
Diffusion occurs in extreme intensity in the
🎯 RRB Group-D 30-10-2018 (Shift-III)
📘 Classification of Matter on the basis of Chemical Properties- I📚 Pure Substance- Compound
Q5
.......... is a pure substance?
🎯 RRB Group-D 24-09-2018 (Shift-I)
📘 Physical States of Matter and Their properties📚 Misc
Q6
Which of the following is / are true?
A. Rigidity: (Toughness)
According to the type of substance, size varies depending on the location of the particles. For example, solids have a fixed size, while liquids attain the size of their vessel and if seen, gases have no shape.
B. Compressibility :
This is the quality of substances that reduces their volume at high pressure. This property is found in gases.
🎯 RRB Group-D 11-10-2018 (Shift-I)
📘 Classification of Matter on the basis of Chemical Properties- I📚 Pure Substance- Element
Q7
........... is not a compound?
🎯 RRB Group-D 08-10-2018 (Shift-II)
📘 Chemical Reactions📚 Chemical change
Q8
In which of the following processes is the pyruvate converted into ethanol and carbon dioxide?
🎯 RRB Group-D– 18/09/2022 (Shift-III)
📘 Important Chemical Compounds📚 Plaster of Paris
Q9
At what temperature does gypsum get converted into Plaster of Paris?
🎯 RRB Group-D– 13/09/2022 (Shift-I)
📘 Chemical Reactions📚 Chemical change
Q10
During fermentation in yeast, pyruvate is converted into which of the following products?
🎯 RRB Group-D– 05/09/2022 (Shift-I)
📘 Organic Chemistry📚 Alcohol
Q11
Conversion of ethanol to ethanoic acid is catalysed by:
🎯 RRB Group-D 30-08-2022 (Shift-II)
📘 Chemical Reactions📚 Physical change
Q12
Which of the following is a physical change?
🎯 RRB Group-D 08-10-2018 (Shift-II)
📘 Chemical Reactions📚 Chemical change
Q13
Which of the following observations helps us to determine whether a chemical reaction has taken or not?
🎯 RRB Group-D 09-10-2018 (Shift-II)
📘 Chemical Reactions📚 Physical change
Q14
Which of the following is a physical change?
🎯 RRB Group-D 08-10-2018 (Shift-III)
📘 Chemical Reactions📚 Chemical change
Q15
Which of the following is not an example of chemical change?
🎯 RRB Group-D 01-10-2018 (Shift-II)
📘 Chemical Reactions📚 Chemical change
Q16
Which of the following is a chemical change?
🎯 RRB Group-D 12-10-2018 (Shift-I)
📘 Laws of Chemical Combinations📚 Laws of Conservation of Mass
Q17
What is the need to balance chemical equations?
🎯 RRB Group-D– 17/08/2022 (Shift-III)
📘 Laws of Chemical Combinations📚 Laws of Conservation of Mass
Q18
During a chemical reaction, the sum of the masses of the reactants and products remains unchanged. What is this called?
🎯 RRB Group-D 15-10-2018 (Shift-III)
📘 Laws of Chemical Combinations📚 Laws of Definite Proportions
Q19
Who among the following scientists propounded the law of constant ratio?
🎯 RRB Group-D 30-10-2018 (Shift-I)
📘 Laws of Chemical Combinations📚 Laws of Definite Proportions
Q20
According to the law of constant proportions -
🎯 RRB Group-D 05-12-2018 (Shift-III)