
Quiz Sr3ScA & C (2023)
Authored by Chong Ting
Chemistry
12th Grade
Used 6+ times

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100 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An equal volume of two gases is mixed together and a vigorous reaction occurs at room temperature and pressure conditions. What are the two gases?
Nitrogen and hydrogen
Hydrogen and oxygen
Hydrogen and fluorine
Chlorine and hydrogen
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following ions will show a lilac colour flame when heated.
Ca2+
Cu2+
Na+
K+
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following statements about the compound of Group 2 elements from magnesium to barium is correct?
Carbonates of Group 2 elements produce bubbles when added to dilute nitric acid
Nitrates of Group 2 elements produce nitrogen gas and oxygen gas on heating
Oxides of Group 2 elements produce bubbles when added to dilute hydrochloric acid
The oxides of group 2 elements are amphoteric
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A 5.00 g sample of an anhydrous Group 2 metal nitrate loses 3.64 g in mass when heated strongly. Which metal is present?
Magnesium
Calcium
Strontium
Barium
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following compounds show amphoteric properties?
Ca(OH)2
NaOH
Mg(OH)2
Al2O3
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Electron configuration of X is: 1s2 2s2 2p6 3s2 3p4. What is the formula of compound formed when sodium reacts with X?
NaX
NaX2
Na2X
Na2X3
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the followings particles difficult to remove its valence electrons?
Ar(g)
Cl-(g)
Ca+(g)
Na+(g)
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