For which one of the following is the density maximum?

Which one of the following is not a unit of distance?

A. Parsec
B. Astronomical Unit
C. Light Year
D. Foot Candle

 

Birth control pills contain synthetic________?

A. Sugars
B. Hormones
C. Vitamins
D. Minerals

Birth control pills contain synthetic forms of estrogen and progesterone. These synthetic hormones help keep the natural levels of estrogen and progesterone in your body constant so that eggs do not mature and the lining of the uterus never develops enough for a fertilized egg to implant.

Sedimentary rocks are formed by natural process known as ?

A. Lithification
B. Rejuvenation
C. Hydration
D. Peroxidation

Sound travels about ___________times faster in water than in air.

A. 2
B. 3
C. 4
D. 5

Sound travels 4.3 times faster in water than air. In water, the particles are much closer together and they can quickly transmit vibration energy and the sound wave travels over four times faster than it would in air.

If the level of atmospheric pollution increases:

A. The length of the day will increases
B. The length of the day will decreases
C. The length of the day will remain same
D. None of these

Which of the following have maximum calorific value?

A. Carbohydrates
B. Fats
C. Proteins
D. Vitamins

Food 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