|
Saloni took a piece of burning charcoal and collected the gas evolved in a test tube. How will she find the nature of the gas? Write down word equations of all the reactions taking place in this process
|
|
0
|
5758
|
March 22, 2018
|
|
Give reasons for the following. Aluminium foils are used to wrap food items. Immersion rods for heating liquids are made up of metallic substances. Copper cannot displace zinc from its salt solution. Sodium and potassium are stored in kerosene
|
|
0
|
1125
|
March 22, 2018
|
|
Distinguish between metals and non-metals on the basis of the following properties: appearance, hardness, malleability, ductility, heat conduction, conduction of electricity
|
|
0
|
7501
|
March 22, 2018
|
|
Fill in the blanks to complete the following paragraph.The name of the product formed in the reaction of sulphur and_____ is
|
|
0
|
2691
|
March 22, 2018
|
|
Iron is more reactive than copper. Can you write an activity to show this?
|
|
0
|
11153
|
March 22, 2018
|
|
Some of the following statements are incorrect. Find the incorrect statements and correct them. The property of metals by virtue of which they can be drawn into wires is called ductility
|
|
0
|
3189
|
March 22, 2018
|
|
What happens when dilute sulphuric acid is poured on a copper plate? iron nails are placed in copper sulphate solution?
|
|
0
|
2056
|
March 22, 2018
|
|
Can you store lemon pickle in an aluminium utensil?
|
|
0
|
13497
|
March 22, 2018
|
|
A doctor prescribed a tablet to a patient suffering from iron deficiency
|
|
0
|
2594
|
March 22, 2018
|
|
Paheli prepared a blue coloured solution of copper sulphate in beaker A and placed an iron nail in it
|
|
0
|
7664
|
March 22, 2018
|
|
If in the above figure iron nail is replaced by a wooden stick, will the bulb glow or not?
|
|
0
|
1621
|
March 22, 2018
|
|
In the figure given below you find that the bulb glows when an iron nail is placed between two ends of wire. Complete the following sentences on the bases of this fact
|
|
0
|
1098
|
March 22, 2018
|
|
Paheli bought a statue made of copper
|
|
0
|
5088
|
March 22, 2018
|