In which part of the Plant does photosynthesis take place?
In which part of the Plant does photosynthesis take place?
A. Flowers
B. Roots
C. Stem
D. Leaves
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A man can survive without food for atleast?
A man can survive without food for atleast?
A. 1 month
B. 2 month
C. 3 month
D. 4 monthDioptre is used to measure ?
Dioptre is used to measure ?A. Lens refractive power
B. Luminous intensity
C. Power
D. Distance of heavenly bodiesThe type of glass used in making lenses and prism is___________?
The type of glass used in making lenses and prism is___________?A. Pyrex glass
B. jena glass
C. Flintglass
D. Soft glassThe lenses are used for the correction of:____________?
The lenses are used for the correction of:____________?A. Long-sightedness
B. short sightedness
C. Both A & B
D. None of thoseWhich of the followong spacecrsft enabled man to step on the moon first?
Which of the followong spacecrsft enabled man to step on the moon first?
A. Spuntnik I
B. Luna II
C. Vostok I
D. Apollo XIWhich of the following have maximum calorific value?
Which of the following have maximum calorific value?
A. Carbohydrates
B. Fats
C. Proteins
D. VitaminsFood contains a number of basic elements such as carbohydrates, proteins, fats and alcohol. These elements all produce different quantities of energy when burnt. The amount of energy produced when one gram of any of these elements is burned is known as its calorific value.
Food component
Energy density
kJ/g
kcal/g
Fat 37 9 Ethanol (drinking alcohol) 29 7 Proteins 17 4 Carbohydrates 17 4 Organic acids 13 3 Polyols (sugar alcohols, sweeteners) 10 2.4 Fiber 8 2