Which of the following is a water-soluble vitamin?
- Vitamin A
- Vitamin C
- Vitamin D
- Vitamin K
Anemometer is used to measure:
- Velocity of wind
- Humidity
- Temperature
- Velocity of sound
Laughing Gas chemical name?
- Sulphur Dioxide
- Nitrous Oxide
- Chromium Oxide
- Calcium Oxide
Deuterium oxide is the chemical name of:
- Hard Water
- Mineral Water
- Salt Water
- Heavy Water
Deuterium oxide (D2O) is commonly known as heavy water. It is a form of water where the hydrogen atoms are replaced with deuterium, an isotope of hydrogen that contains both a proton and a neutron in its nucleus.
Compressed Natural Gas (CNG) has the same chemical composition as that of:
- Butane
- Tear Gas
- Sui Gas
- Propane
Gas used in balloon?
- Hydrogen
- Nitrogen
- Helium
- Carbon dioxide
Helium is used in balloons because it is lighter than air and allows them to float.
Which is the most abundant element in Earth’s crust?
- Silicon
- Oxygen
- Nitrogen
- Hydrogen
Which acid is used in car batteries:
- HF
- H2SO4
- HCL
- HNO3
Sulfuric Acid H2SO4 is used in car battery.