Chemistry - MOST IMPORTANT RRB Group D Previous Year Questions
Practice real questions from previous year exams of RRB Group D.
In which of the following states of the matter molecules have maximum attraction force?
Which of the following is true with respect to particles of solid?
How many states of matter have been determined by scientists so far?
Diffusion occurs in extreme intensity in the
.......... is a pure substance?
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.
........... is not a compound?
In which of the following processes is the pyruvate converted into ethanol and carbon dioxide?
At what temperature does gypsum get converted into Plaster of Paris?
During fermentation in yeast, pyruvate is converted into which of the following products?
Conversion of ethanol to ethanoic acid is catalysed by:
Which of the following is a physical change?
Which of the following observations helps us to determine whether a chemical reaction has taken or not?
Which of the following is a physical change?
Which of the following is not an example of chemical change?
Which of the following is a chemical change?
What is the need to balance chemical equations?
During a chemical reaction, the sum of the masses of the reactants and products remains unchanged. What is this called?
Who among the following scientists propounded the law of constant ratio?
According to the law of constant proportions -