Options:
- A. Manganese
- B. Magnesium
- C. Gypsum
- D. Bauxite
View Answer
C. Gypsum
Everyday Science
The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use ?
Options:
- A. red waves
- B. Infrared waves
- C. Ultrasonic
- D. super sonic
View Answer
C. Ultrasonic
Which of the following helps in clotting of blood?
Options:
- A. Vitamin B1
- B. Vitamin B2
- C. Vitamin D
- D. Vitamin K
View Answer
D. Vitamin K
The average heartbeat per minute in a normal man is _________?
Options:
- A. 50
- B. 70
- C. 80
- D. 100
View Answer
B. 70
A lake starts freezing because of the cold atmosphere. It will first freeze
Options:
- A. At the bottom
- B. ln the middle pan
- C. At the top surface
- D. Uniformly throughout the water body
View Answer
C. At the top surface
Scalding with steam is more severe than scalding by boiling water because_______?
Options:
- A. Steam can penetrate the skin
- B. Steam is at a higher temperature
- C. Steam contains more energy than boiling water
- D. Steam is at a higher pressure
View Answer
C. Steam contains more energy than boiling water
Deficiency of Vitamin-D results in __________?
Options:
- A. night blindness
- B. rickets
- C. scurvy
- D. hair fall
View Answer
B. rickets
The planet that moves round the Sun at the highest speed is_________?
Options:
- A. Jupiter
- B. Venus
- C. Mars
- D. Mercury
View Answer
D. Mercury
What is Dry Ice?
Options:
- A. Solid Oxygen
- B. Solid Carbon Dioxide
- C. Solid Hydrogen
- D. Solid Nitrogen
View Answer
B. Solid Carbon Dioxide
The energy value of food is measured in_______?
Options:
- A. Joule
- B. Calories
- C. Tesla
- D. Proteins
View Answer
B. Calories