Which thing is a solution of gas in gas?
Which thing is a solution of gas in gas?
Smoge | |
Air | |
Fog | |
Mist |
All Question of 9th Class
9th Class
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Which is heterogeneous mixture?
Which is heterogeneous mixture?
Milk of magnesia | |
Milk | |
Ink | |
Sugar solution |
Which element has highest electronegativity.
Which element has highest electronegativity:
O | |
F | |
Cl | |
N |
Electronegativity of Bromine is.
Electronegativity of Bromine is:
4 | |
3.2 | |
2.7 | |
3 |
Which halogen has lowest electronegativity?
Which halogen has lowest electronegativity?
Fluorine | |
Chlorine | |
Iodine | |
Bromine |
Which of the following will not react with dilu...
Which of the following will not react with dilute HCI?
Potassium | |
Calcium | |
Sodium | |
Carbon |
Percentage of oxygen in the atmosphere is.
Percentage of oxygen in the atmosphere is:
24 | |
21 | |
23 | |
22 |
The most non-reactive metal is.
The most non-reactive metal is:
Br | |
CI | |
I | |
F |
Metals react with oxygen to form.
Metals react with oxygen to form:
Acidic Oxides | |
Carbon mono Oxides | |
Amphoteric Oxides | |
Basic Oxides |
Transition elements are.
Transition elements are:
All metals | |
All gases | |
All metloids | |
All Non-metals |
Metals are generally good conductors of electri...
Metals are generally good conductors of electricity because:
Mobile Electrons are present | |
Mobile Protons are present | |
Metals cations are present | |
They are hard enough |
Least reactive noble metal is
Least reactive noble metal is
K | |
Na | |
Al | |
Hg |
Sodium is reactive metal but is not react with
Sodium is reactive metal but is not react with
Sulphur | |
Nitrogen | |
Hydrogen | |
Phosphorus |
Density of calcium is.
Density of calcium is:
1.55gcm-3 | |
2.98gcm-3 | |
1.74gcm-3 | |
0.98gcm-3 |
The most precious metal is.
The most precious metal is:
Platinum | |
Iron | |
Silver | |
Aluminum |
Nobel metal is.
Nobel metal is:
Air | |
Salt | |
Water | |
Gold |
Which one of the following metal burns with bri...
Which one of the following metal burns with brick red flam?
Sodium | |
Calcium | |
Magnesium | |
Iron |
Which non-metal is extremely hard?
Which non-metal is extremely hard?
Phosphorus | |
Sulphur | |
Carbon | |
Iodine |
Which metal easily break?
Which metal easily break?
Salinium | |
Sodium | |
Magnacium | |
Alluminum |
The most reactive metal is
The most reactive metal is
Cesium | |
Gold | |
Alluminum | |
Iron |