Advertisements
Advertisements
Question
State whether the statement given below is true or false. If false write the correct statement.
Lead pencils contain lead.
Options
True
False
Solution
False.
Correct statement: Lead pencils contain graphite.
APPEARS IN
RELATED QUESTIONS
Give the name and formulae of two basic oxides.
Name two metals which are used for making electric wires.
Define non-metals. Give five examples of non-metals.
State any three differences between the physical properties of metals and non-metals.
State three reasons (of which at least one must be chemical) for believing that sulphur is a non-metal.
Which of the following metal exists in the liquid state?
(a) Na
(b) Ag
(c) Cr
(d) Hg
Name a non-metal which shows reducing property.
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 |
Distinguish between an ore and a metallic compound.
Name a non-metal which can form a positive ion.
Which metal occurs as a sulphide also gives the name of their respective ore.
Ankita bought some Glucose Powder. She felt is was adulterated with starch powder. How would she test it?
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:
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
_______ is basic oxide.
The sound of one metal colliding with another makes a noise, this property is called as _______.
Find the odd one out and give its explanation.
Identify who I am!
Amphoteric oxide forming metal- _______
Give two examples of alloy.
