Fill in the blanks:
Magnesium ribbon burns with a dazzling white flame and changes into a ---------------- powder. This powder is magnesium oxide.
Class X_16 May_Chemical Reactions and Equations
Quiz
•
Chemistry
•
10th Grade
•
Medium
Himanshu Ranjan
Used 1+ times
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17 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fill in the blanks:
Magnesium ribbon burns with a dazzling white flame and changes into a ---------------- powder. This powder is magnesium oxide.
white
red
blue
green
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When metals react with acids hydrogen gas is released. However, with nitric acid metals react to form water instead of hydrogen. This is because
nitric acid is strong
nitric acid is reducing in nature
nitric acid is oxidising in nature
nitric acid is weak
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fe3O4 occurs in nature as the mineral "-----------------"
Haematite
Iron pyrite
Wustite
Magnetite
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
100 ml of hydrogen gas reacts with 50 ml of oxygen gas. The volume of water vapour formed is ------------
100 ml
150 ml
125 ml
200 ml
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1 atm =
1 Pa
105 Pa
760 Pa
1.01325 x 105 Pa
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following metals shall not react with cold water?
Potasium
Lead
Sodium
Calcium
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Slaked lime is formed by mixing quick lime in water. The reaction is
Exothermic
Endothermic
Energy is neither released nor absorbed
None
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