Question

9. Which of the statements is true? [ 1
(i) Gold is a metal (ii) Gold does not react with air
(iii) Metals react with bases and liberate hydrogen (iv) Oxides of me
(A) i ii, iii. (B) i, ii, iv (C) i, ii, iv, (iv) i. lii, iv
10. Which of the following floats on the surface of water with a hissing
(A) Iron(B) Sodium (C) Zinc (D) Carbon
11. Phosphorus is stored in [ ]
a. Kerosine b. Petroleum c. Water d. None.
12. This symbol represents : [ ]
(A) Reuse (B) Reduce (C) Recycle
13. Frictional force is : [ ]
(A) Independent of area of contact (B) Dependant of area of contact
(C) Either dependant or independent (D) Neither dependant nor indep
14. Which of the following is not an example of rolling friction? [ ]
(A) Ball bearings On
(B) Truck tyres (C) Rolls on suitcase
(D) Wooden block and trolley surface​

Answer 1

Answer:

9) A) I,ii,iii,

10)B)Sodium

11)C) Water

12) There is no symbol shown

14) D

Explanation:

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