Question

(v) Lithium iodide
(E) Choose the correct answer:
151
(1) Beta Particles have
(a)positive charge
(b)negative charge
(c)neutral
(d) any type of charge
(1) Which form of energy do the molecules of a substance gain when it is heated?
(a)Electrical
(b) Kinetic
(c) Chemical
(d) potential
(iii)in which of the following reactions can an element be broken into two or more smaller
parts?
(a)Physical (b) Nuclear (c) Chemical (d) Mechanical
(iv) Which reaction does not takes place?
(a) CuSO + Zn → ZnSO4 + Cu
(b) CuSO4 + Fe → FeSO 4 +Cu
(c)ZnSO4 + Hg-HgSO, Zn
(d) Zn+2HCI → ZnCl2 +H
(V) 2NaNO, → 2NaNO,40, In this reaction
(a) two molecules of sodium, nitrite are reactant
(b) two molecules of sodium nitrate areproducts
(c)one molecule of oxygen is product

Answer 1

Answer:

(d) Zn+2HCI → ZnCl2 +H

(V) 2NaNO, → 2NaNO,40, In this reaction

(a) two molecules of sodium, nitrite are reactant

(b) two molecules of sodium nitrate areproducts

(c)one molecule of oxygen is product

Answer 2

(B ) TWO Molecules of sodium nitrite Our products and what is present in the other side recentants