Options:
- A. It will remain under the water, when it will displace more water than its weight
- B. the density of needle is less than that of water
- C. due to surface tension
- D. due to its shape
View Answer
C. due to surface tension
Everyday Science
Which of the following is a tissue?
Options:
- A. Blood
- B. Lungs
- C. Kidney
- D. pancreas
View Answer
A. Blood
Rain drops fall from great height Which among the following statements is true regarding it?
Options:
- A. they fall with that ultimate velocity, which are different for different droplets
- B. they fall with same ultimate velocity
- C. their velocity increases and they fall with different velocity on the earth
- D. their velocity increases and they fall with same velocity on the earth
View Answer
A. they fall with that ultimate velocity, which are different for different droplets
Which of the gas is not known as green house gas?
Options:
- A. Methane
- B. Nitrous oxide
- C. Carbon dioxide
- D. Hydrogen
View Answer
D. Hydrogen
Which of the following statements is true when we see
Options:
- A. We face sun and raindrops
- B. The Sun remains behind us and we face raindrops
- C. In light rainfall, we face Sun
- D. The sky remains clear and the sun is at lower position in the sky
View Answer
B. The Sun remains behind us and we face raindrops
The gases used in different types of welding would include:__________?
Options:
- A. oxygen and hydrogen
- B. oxygen, hydrogen, acetylene and nitrogen
- C. oxygen, acetylene and argon
- D. oxygen and acetylene
View Answer
D. oxygen and acetylene
Milk tastes sour when kept in the open for sometime due to the formation of __________?
Options:
- A. lactic acid
- B. citric acid
- C. acetic acid
- D. carbonic acid
View Answer
A. lactic acid
Potassium nitrate is used in__________?
Options:
- A. Medicine
- B. Fertilizer
- C. Salt
- D. Glass
View Answer
B. Fertilizer
Soap is prepared by boiling caustic soda with ___________?
Options:
- A. Alcohol
- B. Kerosene oil
- C. Glycerine
- D. Fats
View Answer
Abid Hussain
Which metal pollute the air of a big city?
Options:
- A. Copper
- B. Chromium
- C. Lead
- D. Cadmium
View Answer
C. Lead