Which is carnalite________________?
Correct answer: C. KCI MgCl2 6H2O
- A. KCI
- B. NaCI
- C. KCI MgCl2 6H2O
- D. Na2CO3. 10H2O
Explanation
Carnallite is the hydrated double salt KCl.MgCl2.6H2O, formed naturally in evaporite deposits. It is not simple potassium chloride, sodium chloride or washing soda. The likely alternative is KCl because potassium chloride is part of the formula, but carnallite also contains magnesium chloride and six waters of crystallisation.
Last updated
About Reactions of Group II Elements
Group II reactions cover the behaviour of beryllium, magnesium, calcium, strontium and barium with water, oxygen, halogens, acids and nitrogen. The trends in reactivity, hydroxide solubility and basicity, along with the thermal decomposition of carbonates and nitrates, depend on increasing atomic size down the group.
Practise s-Block and p-Block Elements
1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A brivalent metal has the equivalent weighr of 12. The molecular weight to its oxide will be_______?
A dilute hydrochloric acid is added to a flask containing time stone a gas is produced which is dissolved in time water in a test tube a white precipitate is formed the precipitate is of:
Asbestos is hydrated _ magnesium silicate.
At which condition are hydrides of alkaline earth metals formed:
Basicity is inversely proportional to