General science elements and metals

General Science Elements and metals

Question 1 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
Air is a/an
A
compound
B
element
C
electrolyte
D
mixture






Question 2 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
Which of the following is a non metal that remains liquid at room temperature?
A
Phosphorous
B
Bromine
C
Chlorine
D
Helium
Question 3 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of
A
bromine
B
fluorine
C
chlorine
D
sulphur






Question 4 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
Washing soda is the common name for
A
Sodium carbonate
B
Calcium bicarbonate
C
Sodium bicarbonate
D
Calcium carbonate
Question 4 Explanation: 

What is the scientific name for washing soda?

Sodium carbonate (also known as washing soda or soda ash), Na2CO3 is a sodium salt of carbonic acid.

Scientific name for baking soda?

Sodium bicarbonate or sodium hydrogen carbonate is the chemical compound with the formula NaHCO3. Sodium bicarbonate is a white solid that is crystalline but often appears as a fine powder. Since it has long been known and is widely used, the salt has many related names such as baking soda, bread soda, cooking soda, and bicarbonate of soda.

Question 5 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
Which of the gas is not known as green house gas?
A
Methane
B
Nitrous oxide
C
Carbon dioxide
D
Hydrogen
Question 5 Explanation: 

In order, the most abundant greenhouse gases in Earth's atmosphere are:

* water vapor
* carbon dioxide
* methane
* nitrous oxide
* ozone
* chlorofluorocarbons







Question 6 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
The filament of an electric bulb is made of
A
tungsten
B
nichrome
C
graphite
D
iron
Question 7 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
Balloons are filled with
A
nitrogen
B
helium
C
oxygen
D
argon






Question 8 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
Production of chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which of the following domestic products?
A
Television
B
Refrigerator
C
Tube light
D
Cooking gas
Question 9 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
The element common to all acids is
A
hydrogen
B
carbon
C
sulphur
D
oxygen






Question 10 ->Click on any option to know the correct answers (सही उत्तर जानने के लिए किसी भी Choice पर क्लिक करें)
The hardest substance available on earth is
A
Gold
B
Iron
C
Diamond
D
Platinum
There are 10 questions to complete.

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