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प्रश्न
Fill in the following blanks with suitable words :
The elements which are sonorous are called ..........................
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उत्तर
The elements that are sonorous are called metals.
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संबंधित प्रश्न
Fill in the blank :
The state of matter with definite volume and definite shape is called______
Name the terms for the change of a solid into liquid.
Classify the following into elements, compounds and mixtures:
- Sodium
- Soil
- Sugar solution
- Silver
- Calcium carbonate
- Tin
- Silicon
- Coal
- Air
- Soap
- Methane
- Carbon dioxide
- Blood
Which type of elements, metals or non-metals, show the property of brittleness ?
What is meant by saying that metals are lustrous ?
Name a metal which can be easily cut with a knife.
Name a metal which has no fixed shape.
Which one of the following is not a metalloid ?
Iron powder and sulphur powder were mixed together and divided into two parts A and B. When part A was heated strongly over a burner, then a substance C was formed. The part B was, however, not heated at all. When dilute hydrochloric acid was added to substance C, then gas D was evolved and when dilute hydrochloric acid was added to part B then gas E was evolved.
- What type of substance is B ?
- What type of substance is C ?
- Name the gas (i) D, and (ii) E ?
- State one characteristic property of gas D.
- Write one test to identify gas E.
Out of a colloid, solution and a suspension :
which one has the largest particles ?
Fill in the following blank :
Milk is a .................... solution but vinegar is a .................... solution.
In what respects does a true solution differ from a colloidal solution ?
How will you differentiate between a suspension and a colloid ?
You have been given a suspension and a solution. How could you tell the difference between them by their appearance ?
Fill in the following blanks with suitable words :
Immiscible liquids are separated by using a .....................
Pure copper sulphate can be obtained from an impure sample by the process of :
There are three liquids A, B and C, all having different densities and different boiling points. Liquids A and C are organic in nature whereas liquid B is considered to be inorganic. When liquids A and B are put together in a container, they form a single layer. On the other hand, when, liquids B and C are mixed, they form two separate layers :
(a) Which process will you use to separate a mixture of A and B ?
(b) Which method will you use to separate a mixture of B and C ?
(c) Name the liquids which would behave like (i) A (ii) B and (iii) C.
Name the metals that are used in jewellery.
Give an example of a molecule.
Write a scientific reason.
Lemon sherbat has a sweet, sour and salty taste and it can be poured in a glass.
