Junior Coach Football (Sports Youth Department) 2016

31. Turning of milk into curd at room temperature involves -

(1) Physical change
(2) Chemical change
(3) Both
(4) None of these

Correct Answer: (2) Chemical change

Solution:When a substance combines with another substance to form a new substance it is called chemical change like: turning of milk to curd at room temperature.

32. The decomposition of vegetable matter into compost is an example of-

(1) Exothermic process
(2) Endothermic process
(3) Both
(4) None of these

Correct Answer: (1) Exothermic process

Solution:Exothermic process is a chemical reaction in which heat emission occurs.

33. ZnO is an amphoteric oxide because-

(1) It reacts with acid
(2) It reacts with water
(3) It reacts with both acid and base
(4) It reacts with base

Correct Answer: (3) It reacts with both acid and base

Solution:Zno reacts with both acid and base.

34. LiCl is soluble in organic solvent due to

(1) Hydrogen bonding
(2) Wanderwall bonding
(3) Static electrical attraction
(4) Covalent bonding

Correct Answer: (4) Covalent bonding

Solution:When a chemical bond is formed as a result of the sharing of electrons between two atoms, it is called covalent bond.

35. When HCI is added to copper oxide then-

(1) Blue compound is formed
(2) Drab compound is formed
(3) Blue-Black compound is formed
(4) Blue-green compound is formed

Correct Answer: (4) Blue-green compound is formed

Solution:Blue-green compound is formed.

36. The nutrition in fungus is-

(1) Parasites
(2) Autotrophic
(3) Saprophytic
(4) Saprophytic

Correct Answer: (4) Saprophytic

Solution:Mucor is a type of fungus. it is divided into many branches to form fungal webs. The nutrition in it is saprophytic.

37. Which of the following is connected with transport of water in plants?

(1) Bark
(2) Xylem
(3) Epidermis
(4) Cambium

Correct Answer: (2) Xylem

Solution:Xylum-This tissue is found in the root, stem and leaves of plants.

38. Main function of kidney is -

(1) Selective reabsorption
(2) Micro filtration
(3) Passive absorption
(4) Both (1) and (2)

Correct Answer: (4) Both (1) and (2)

Solution:Main function of kindey is selective reabsorption and utra filtration along with micro filtration.

39. Which one is correct about magnification produced by a concave mirror?

(1) It is always greater than one
(2) It is always less than one
(3) It is always one
(4) It may be less than one or greater than one

Correct Answer: (4) It may be less than one or greater than one

Solution:The magnification produced by a concave mirror may be less than one or greater than one.

40. A white light falls on a glass prism, the least distracted color is-

(1) Voilet
(2) Orange
(3) Red
(4) Yellow

Correct Answer: (3) Red

Solution:When sun light passes through a prism. It has the highest deflection of voilet color and the lowest deflection of red color.