Q1.Cod liver oil from fish is rich in which vitamin?
(a) Vitamin A
(b) Vitamin D
(c) Vitamin C
(d) Vitamin B
Q2.Isolines joining places of equal rainfall are called ___________
(a) isohyets
(b) isotherms
(c) isobars
(d) contours
Q3.Which one of the following is commonly used for pulp bleaching in the paper industry?
(a) Mild sulphuric acid
(b) Glucose isomerase
(c) Hydrogen peroxide
(d) Iodine and water
Q4.Yeast is a ______________
(a) Bacteria
(b) Fungi
(c) Algae
(d) Bryophyte
Q5.Which of the following is not connective tissue?
(a) Bone
(b) Cartilage
(c) Blood
(d) Skeletal muscle
Q6.Every hot object emits _________________
(a) X rays
(b) Visible light
(c) Infrared rays
(d) Ultraviolet rays
Q7.Ozone protects biosphere from ___________
(a) X rays
(b) Gamma rays
(c) Ultraviolet rays
(d) Infrared rays
Q8.The molecular mass of a gas is ________
(a) twice its vapour pressure
(b) equal to its vapour pressure
(c) half its vapour pressure
(d) not related to its vapour pressure
Q9.Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water
(a) Magnesium
(b) Calcium
(c) Manganese
(d) Chromium
Q10.When does the sun shine vertically on the Equator?
(a) Throughout the year
(b) For six months
(c) Twice a year
(d) Once a year
Q11.Lichen is an association between which of the two?
(a) Algae and fungus
(b) Algae and tree
(c) Fungus and tree
(d) Bacteria and legume plant
Q12.Among the given nutrients, milk is a poor source of which of the following?
(a) Vitamin 'C'
(b) Calcium
(c) Protein
(d) Carbohydrate
Q13.What is a Pepper plant?
(a) Bush
(b) Shrub
(c) Vine
(d) Tree
Q14.Why does a cannon recoil after firing?
(a) Conservation of energy
(b) Backward thrust of gases produced
(c) Newton's third law of motion
(d) Newton's first law of motion
Q15.Which of the following is used as non-stick coating for cooking utensils?
(a) Perspex
(b) Styrofoam
(c) Polystyrene
(d) Teflon
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