Advertisements
Advertisements
प्रश्न
Name a metal used as a thermometric liquid
उत्तर
Mercury
APPEARS IN
संबंधित प्रश्न
Fill in the blanks:
Metals are ________ conductors of heat and _________.
Name the non-metal which is used as a rocket fuel (in liquid form).
Fill in the blank
A chemical compound that makes up the striking heads of match sticks is .........................
What do you understand by the term metal?
Name a non-metal which is good conductor of electricity.
Name:
a non-metal which is ductile
Name:
a metal which is brittle
The table below compares some properties of metals and non-metals. Write down the missing
statements (i) to (iv) :
| Metals | Non-metals |
| (i) ………………….. | Poor conductors of heat |
| (ii) Malleable | …………………… |
| (iii) Form positive ions | …………………… |
| (iv) ………………… | Form acidic oxides |
Explain the term Gangue .
Three experiments to study the process of rusting are given below. Observe the three test tubes and answer the following questions.
- Why the nail in the test tube 2 is not rusted?
- Why is the nail in the test tube 1 is rusted highly?
- Would the nail in the test tube 3 get rusted?
Name the following:
An Alloy of copper and Zinc.
With reference to the physical properties of metals and non-metals, state the following exception.
A metal which floats on water.
Give reason for the following:
Metals form cations while non-metals form anions.
Give reason for the following:
Potassium reacts vigorously with cold water while copper does not react with water or steam.
Select the appropriate option for the following statement:
The element from the halogen family which is most abundant
The sound of one metal colliding with another makes a noise, this property is called as _______.
_______ is good conductor of heat but bad conductor of electricity.
The composition of aqua-regia is
