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Fill in the blank:
_______ are used for grinding and crushing solid substances into a powder.
Concept: undefined >> undefined
Fill in the blanks:
The glass apparatus is made of _____ or _____ glass.
Concept: undefined >> undefined
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Give a comparative difference between soaps and detergents. Give a reason. why detergents have an advantage over soap.
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State what are – ‘stain removals’. Name three important stain removers & give their prime functions.
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Match the words in Column A with their respective functions in Column B.
| Column A | Column B |
| (a) Iron stand | (i) To boil chemicals |
| (b) Test tube | (ii) To keep solution |
| (c) Funnel | (iii) To stir the solution |
| (d) Beaker | (iv) To support apparatus |
| (e) Glass rod | (v) To transfer the liquids |
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Choose the correct alternative from the options given for the following statement.
The evaporating dish is made of
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Choose the correct alternative from the options given for the following statement.
The spirit lamp is made of
Concept: undefined >> undefined
Choose the correct alternative from the options given for the following statement.
The apparatus to measure an accurate volume of liquid, is
Concept: undefined >> undefined
Choose the correct alternative from the options given for the following statement.
To pass gas from one vessel to another, you will use
Concept: undefined >> undefined
Choose the correct alternative from the options given for the following statement.
To prevent the escape of a gas from a gas jar, you will cover its mouth with
Concept: undefined >> undefined
Write true or false against the following statement and correct it if false.
A glass funnel is used to pour off liquids.
Concept: undefined >> undefined
Write true or false against the following statement and correct it if false.
A test tube is used to test liquid chemicals.
Concept: undefined >> undefined
Write true or false against the following statement and correct it if false.
A mortar and pestle are used for evaporation.
Concept: undefined >> undefined
Write true or false against the following statement and correct it if false.
A round-bottom flask is used to store chemicals.
Concept: undefined >> undefined
Write true or false against the following statement and correct it if false.
A glass rod is used to stir solutions.
Concept: undefined >> undefined
Select the correct name from the choices given below for the following case.
The branch of Science which deals with the different forms of energy e.g. light and sound.
Concept: undefined >> undefined
Select the correct name from the choices given below for the following case.
The branch of Chemistry which includes a study of specific carbon compounds – built up mainly carbon and hydrogen.
Concept: undefined >> undefined
Select the correct name from the choices given below for the following case.
The scientist who formulated the Periodic Table.
Concept: undefined >> undefined
Select the correct name from the choices given below for the following case.
Predecessors to the modern Chemist who created the ‘Philosopher's stone’.
Concept: undefined >> undefined
Select the correct name from the choices given below for the following case.
A synthetic fiber used in clothing.
Concept: undefined >> undefined
