CCE Class IX Chapter: Is matter around us pure : MCQ’S

CCE Class IX Chapter: Is matter around us pure : MCQ’S
1. Which of the following provides an example of a true solution?
(A) Blood (B) Milk (C) Starch solution (D) Sugar solution
2. Which of the following can be classified as a pure substance ?
(A) Milk (B) Sea - water (C) Ice (D) Cast iron
3. Which of the following is a compound ?
(A) air (B) Milk (C) Iodine (D) Water
4. The particle size of solute in true solution is of the order of -
(A) 10-6 m (B) 10-7 m (C) 10-8 m (D) 10-9 m
5. Which of the following statement is not true about true solution?
(A) It can pass through filter paper.
(B) It is homogeneous in nature.
(C) At constant temperature, particles of solute settle down.
(D) From a true solution, the solute can easily be recovered by evaporation or crystallization.
6. The concentration of solution is the mass of the solute in grams, which is present in -
(A) 10 gm of solvent (B) 10 gm of solution
(C) 100 gm of solvent (D) 100 gm of solution
7. A solution, which at a given temperature dissolves as much solute as it is capable of dissolving, is said to be a -
(A) saturated solution (B) semi saturated solution
(C) unsaturated solution (D) super saturated solution
8. Which of the following is not a compound ?
(A) Marble (B) Washing soda (C) Quick lime (D) Brass
9. The elements which given out harmful radiation are called -
(A) normal elements (B) representative elements
(C) radioactive elements (D) none of these
10. Air is regarded as a -
(A) compound (B) mixture (C) element (D) electrolyte
Answer:
1	2	3	4	5	6	7	8	9	10
D	C	D	D	C	D	A	D	C	B