Given below are the steps to test the presence of proteins in a
food item:
(i) Take a small quantity of the food item in a test tube, add
10 drops of water to it and shake it.
(ii) Make a paste or powder of food to be tested.
(iii) Add 10 drops of caustic soda solution to the test tube
and shake well.
(iv) Add 2 drops of copper sulphate solution to it.
Which of the following is the correct sequence of the steps?
(a) i, ii, iv, iii (b) ii, i, iv, iii
(c) ii, i, iii, iv (d) iv, ii, i, iii
How are the convectional currents in the mantle initiated and maintained?
Read the following statements about diseases.
(i) They are caused by germs.
(ii) They are caused due to lack of nutrients in our diet.
(iii) They can be passed on to another person through
contact.
(iv) They can be prevented by taking a balanced diet.
Which pair of statements best describe a deficiency disease?
(a) (i) and (ii) (b) (ii) and (iii)
(c) (ii) and (iv) (d) (i) and (iii)
Read the food items given below:
(i) Wheat
(ii) Ghee
(iii) Iodised salt
(iv) Spinach (palak)
Which of the above food items are “energy giving foods”?
(a) (i) and (iv) (b) (ii) and (iv)
(c) (i) and (ii) (d) (iii) and (iv)
What were the forces suggested by Wegener for the movement of the
continents?
Which of the following nutrients is not present in milk?
(a) Protein
(b) Vitamin C
(d) Calcium
(d) Vitamin D
Which one of the following is the type of plate boundary of the Indian plate
along the Himalayan mountains?
(a) Ocean-continent convergence
(b) Divergent boundary
(c) Transform boundary
(d) Continent-continent convergence
Which one of the following food item does not provide dietary fibre?
(a) Whole grains
(b) Whole pulses
(c) Fruits and vegetables
(d) Milk
Which one of the following facts was not considered by those while
discussing the concept of sea floor spreading?
(a) Volcanic activity along the mid-oceanic ridges.
(b) Stripes of normal and reverse magnetic field observed in rocks of ocean
floor.
(c) Distribution of fossils in different continents.
(d) Age of rocks from the ocean floor.
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