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Class IX >> Science >> Is Matter Around Us Pure >> A1

Q1	When two or more elements combine in a fixed chemical proportion, it is called __________.
A	Solution
B	Metalloid
C	Mixture
D	Compound

Q2	Which metal can be cut by a knife?
A	Br
B	Na
C	Zn
D	Ag

Q3	Tincture of iodine has __________ as solute and __________ as a solvent.
A	Iodine, Water
B	Water, Iodine
C	Iodine, Alcohol
D	Alcohol, Iodine

Q4	Identify the person who established the definition of element?
A	Robert Boyle
B	Antoine Laurent Lavoisier
C	Albert Einstein
D	Marie Curie

Q5	What could be the possible state of a matter?
A	Gas
B	Solid
C	Liquid
D	All of the Above

Q6	Which of the following is a compound?
A	Magnesium
B	Brass
C	Pencil Lead
D	Carbon Dioxide

Q7	Air around us is an example of __________.
A	Element
B	Suspension
C	Compound
D	Mixture

Q8	In a glass of lemonade, which of the following is the solvent?
A	Salt
B	Water
C	Lemon Juice
D	Sugar

Q9	Which of the following statements are NOT true?
A	Element and Compounds Are Pure Substances
B	Mixture is Not A Pure Substance
C	Pure Substance has the Same Composition Throughout
D	None of the Above

Q10	Mercury and sodium are examples of __________.
A	Metal
B	Non-metal
C	Colloid
D	Metalloid

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