Text Solution
Verified by Experts
|
PATHFINDER-BASICS IN CHEMISTRY-QUESTION BANK
- State the number of significant figures in the following 62.4
01:23
|
- State the number of significant figures in the following 0.0405
02:03
|
- What is the difference between 3.0g and 3.00g
02:10
|
- The population of India based on 1981 census figure was 684 millions. ...
02:25
|
- Add the numbers 28.521, 6.38 and 0.216 and report the final result cor...
01:42
|
- The mass of copper metal is 6.432 gm and the density of copper is 7.6g...
02:03
|
- Calculate the mass of 2.5 gram atom of magnesium.
01:35
|
- How many gram molecules are present in 4.9g of H2SO4?
02:40
|
- Why do we regard the gaseous state of water as vapours while that ammo...
Text Solution
|
- An element has fractional atomic mass. What does this indicate?
Text Solution
|
- When 4.2 g NaHCO3 is added to a solution of CH3COOH, weighing 10 g, it...
Text Solution
|
- Copper sulphate crystals contain 25.45% Cu and 36.07% H2O. If law of c...
02:14
|
- 10 ml of H2 contain 2000 molecules under certain temperature and press...
02:28
|
- One volume of hydrogen combines with sulphur to produce one volume of ...
02:50
|
- A flask P contains 0.5 mole of oxygen gas. Another flask Q contains 0....
04:52
|
- From 200mg of CO2, 10^21 molecules are removed. How many moles of CO2 ...
03:53
|
- How many molecules of CO2 are present in one litre of air containing 0...
02:38
|
- On analyzing an impure sample of sodium chloride, the percentage of ch...
03:07
|
- Copper gives two oxides. On heating one gram of each in hydrogen, we g...
04:59
|
- The average atomic mass of copper is 63.5u. It exists as two isotopes ...
03:38
|