Advertisements
Advertisements
प्रश्न
“Is malleable and ductile” best describes :
पर्याय
a solution
a metal
a compound
a non-metal
Advertisements
उत्तर
a metal
Metals are malleable and ductile as they can be hammered into thin sheets and can be stretched into wires.
APPEARS IN
संबंधित प्रश्न
Gases have definite volume but no definite shape.
Name the terms for the change of vapour into a liquid.
Define the following term of Matter .
Fill in the blank
Liquids have a definite ______
Name the scientist who studied the movement of pollen grains suspended in water through a microscope. What is this phenomenon known as?
Explain why, osmosis can be considered to be a special kind of diffusion. Classify the following into
(i) osmosis, and (ii) diffusion :
- swelling up of a raisin on keeping in water
- spreading of virus on sneezing
- earthworm dying on coming in contact with common salt
- shrinking of grapes kept in thick sugar syrup
- preserving of pickles in salt
- spreading of smell of cake being baked in the kitchen
- aquatic animals using oxygen dissolved in water during respiration
Name a non-metal which is a good conductor of electricity.
Name the property which allows metals to be hammered into thin sheets.
Which of the following statements are true for pure substances ?
- pure substances contain only one kind of particles
- pure substances may be compounds or mixtures
- pure substances have the same composition throughout
- pure substances can be exemplified by all elements other than nickel
What is the name of the clear liquid formed when a solid dissolves in a liquid ?
What is the difference between solutions and colloids ?
Define Aerosol Give one example.
100 mL of water at room temperature of 25°C is taken in a beaker and a little of solid S is dissolved in it by stirring to obtain a solution X. More and more of solid S is added to the solution with constant stirring, while keeping the temperature of solution constant at 30°C. After some time it is observed that no more solid dissolves in water and at the same time some solid is also left undissolved at the bottom of the beaker.
- The contents of beaker are filtered through a filter paper to obtain solution Y in the form of a filtrate.
- What name is given to solutions like X ?
- What name is given to solutions like Y ?
- What will you observe if the solution Y at 30°C is cooled down to 10°C by keeping the beaker in crushed ice ? Why ?
- What term is used to denote the amount of solid dissolved in 100 grams of water in a solution lie Y ?
Describe a method to separate a mixture of camphor and sand.
What's the solution?
We need to rub salt on a corncob, but only salt crystals are available.
Complete the given analogy.
Murukku from hot oil: ______:: Coffee powder residue from decoction: ______
The property which allows the metals to be hammered into their sheets is ______.
Stars including Sun are covered in ______.
Boiling refers to the process by which a substance changes from the liquid to the gaseous state at its ______ point.
Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
