Question

(i) The number of electrons in the outermost shell of alkaline earth metals

is .

(a) 1 (b) 2 (c) 3 (d) 7

(ii) Which of the following process is to be carried out to avoid the formation

of greenish layer on brass vessels due to corrosion?

(a) Electroplating (b) Anodization (c) Tinning (d) Alloying

iii)0Identify the type of following chemical reaction of carbon compound.

CHO 11

12C + 11H,0

(a) Combination reaction

(c) Decomposition

(b) Displacement reaction

(d) Double displacement

(iv) The image obtained while finding the focal length of a convex lens

is ..

(a) real and erect

(c) real and inverted

(b) virtual and erect

(d) virtual and inverted

v)______is an example of anomalous behaviour of water.

(a) Dew point

(b) Solidification

(c) Cracking of rocks (d) Evaporation​

Answer 1

(I) (b) 2
(II) (c) Tinning
(III) (c) Decomposition reaction
(IV) (c) Real and inverted
(V) (c) Cracking of rocks


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