Advertisements
Advertisements
प्रश्न
Choose the correct answer.
A 5 per cent sugar solution means that :
पर्याय
5 g of sugar is dissolved in 95 g of water.
5 g of sugar is dissolved in 100 g of water.
Advertisements
उत्तर
A 5% sugar solution means 5 gm of sugar is dissolved in 95 gm of water. Therefore, the correct option is “a”.
APPEARS IN
संबंधित प्रश्न
Intermolecular force of attraction is maximum in ............ less in .......... and the least in .............
Fill in the blank
Liquids have a definite ______
When extremely small particles X derived from the anther of a flower were suspended in a liquid Y and observed through a microscope, it was found that the particles X were moving throughout the liquid Y in a very zig-zag way. It was also observed that warmer the liquid Y, faster the particles X moved on its surface.
- What could particles X be ?
- What do you think liquid Y is ?
- What is the zig-zag movement of X known as ?
- What is causing the zig-zag movement of particles X ?
- Name the scientist who discovered this phenomenon.
- What does this experiment tell us about the nature of liquid Y?
Explain why, hydrogen and oxygen are considered elements whereas water is not considered an element.
What is meant by (i) elements (ii) compounds, and (iii) mixtures ?Write down the names of two elements, two compounds and two mixtures.
Which of the two will scatter light : soap solution or sugar solution ? Why ?
A solution contains 5.6 mL of alcohol mixed with 75 mL of water. Calculate the concentration of this solution.
Which of the following is a sol ?
Shaving cream, Milk, Fog, Soap solution, Hairspray
Explain how, impure copper sulphate can be purified by crystallisation.
Which of the following mixture cannot be separated by using water as the solvent ?
Naphthalene can be separated from sand :
Which of the following cannot be separated from air by the process of fractional distillation ?
The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :
Atoms are tiny particles that repel each other when they are squeezed very close.
______ is used for industrial refrigeration and transporting frozen food.
The fluidity of solids: ______.
Evaporation is always accompanied by ______ in temperature.
Give an example of a molecule.
Define the term matter.
