Options:
- A. due to presence of dust in air
- B. carbon dioxide and water in clouds react to form carbonic acid
- C. Ozone depletion
- D. All of these
View Answer
B. carbon dioxide and water in clouds react to form carbonic acid
Everyday Science
Density of Milk is________?
Options:
- A. 1.024 g/cm3
- B. 1.034 g/cm3
- C. 1.044 g/cm3
- D. 1.054 g/cm3
View Answer
B. 1.034 g/cm3
Pressure is measured by_________?
Options:
- A. barometer
- B. Voltmeter
- C. Lactometer
- D. Ammeter
View Answer
A. barometer
Which of the following is used in Pencils?
Options:
- A. Graphite
- B. Silicon
- C. Charcoal
- D. Phosphorous
View Answer
A. Graphite
What prevents the earth
Options:
- A. Gravity
- B. Ozone layer
- C. Troposphere
- D. Ecosystem
View Answer
A. Gravity
Which term describes the emission of light by a living organism?
Options:
- A. Natural light
- B. Bioluminescence
- C. Illumination
- D. Mimicry
View Answer
B. Bioluminescence
The second most abundant metal found in the earth
Options:
- A. Silicon
- B. Aluminium
- C. Calcium
- D. Sodium
View Answer
A. Silicon
What amount of fats give energy of 9.3 K Calories?
Options:
- A. 0.5 gram
- B. 1.0 gram
- C. 2.0 gram
- D. 4.1 gram
View Answer
B. 1.0 gram
Disolved oxygen (DO) in water should be?
Options:
- A. 400 to 800 ppm
- B. 4000 to 8000 ppm
- C. 0.4 to 0.5 ppm
- D.
View Answer
D.
Density of Water is_________?
Options:
- A. 897
- B. 997
- C. 1000
- D. 1025
View Answer
B. 997