Question 1 :
A compound is a substance composed of two or more different types of _____ chemically combined in a fixed proportion.
Question 4 :
Consider the list of the things given below. <br/>salt, pepper, chilli, soap, turmeric <br/>How many of the following can be classified in the same group?
Question 6 :
Which of the following classification is not correct.<br>1. Pen - Non-living thing<br>2. Lion- Animal<br>3. Rose - Mammal
Question 7 :
The property that we use for classifying things depends on the ___________ of the classification.
Question 11 :
The study of chemical reactions at surfaces of substances is called :<br/>
Question 13 :
The result of the operation 2.5 X 1.25 should be which of the following on the basis of significant figures?
Question 14 :
This is the branch of chemistry deals with chemistry of elements other than carbon and of their compounds :
Question 17 : Identify the compounds among the following:<div><br/>(a) Milk (b) Sodium (c) Calcium Carbonate (d) Methane</div>
Question 18 :
Which of the following expression of concentration of a solution is independent of temperature?<br>
Question 19 :
______ are made up of one kind of atom which can not be broken into simpler substances.
Question 20 :
Which of the following is not a mixture but a compound?
Question 22 :
Physical chemistry is the branch of chemistry which deals with the study of :<br/>
Question 26 :
Drug azidothymidine was isolated from plant and then synthesised in laboratory for treatment of which disease?
Question 29 : Statement 1 : Iron is an element.<div><br/>Statement 2 : It cannot be broken into smaller units and retain its physical and chemical properties.</div>
Question 32 :
Number of significant figures in $ 2000\times 10^2$ is ____ .
Question 34 :
Which if the following is used in making smoke bombs ?
