|
Give molecular formula of Epsom salt?
|
|
0
|
735
|
August 13, 2016
|
|
Which of the following halides is insoluble in water?
|
|
1
|
578
|
August 13, 2016
|
|
Which of the following is an ore of calcium? Bauxite, Gypsum, Camellite, Megnetite
|
|
0
|
1039
|
August 13, 2016
|
|
What is the formula, for Plaster of Paris?
|
|
0
|
3189
|
August 13, 2016
|
|
What is the chemical structure of bleaching power?
|
|
0
|
437
|
August 13, 2016
|
|
What is meant by dead burnt plaster?
|
|
0
|
3784
|
August 13, 2016
|
|
Why a piece of burning Mg keeps on burning in a jar of sulphur dioxide?
|
|
0
|
800
|
August 13, 2016
|
|
Which one of the alkaline earth metal carbonates is thermally the most stable?
|
|
1
|
2989
|
August 13, 2016
|
|
Discuss the general characteristics and gradation in properties of alkaline earth metals
|
|
0
|
4885
|
August 13, 2016
|
|
Comment on each of the following:
|
|
1
|
681
|
August 13, 2016
|
|
Compare the alkali metals and alkaline earth metals with respect to
|
|
1
|
6644
|
August 13, 2016
|
|
Beryllium and magnesium do not give specific colour to flame whereas other alkaline earth metals do so. Why?
|
|
1
|
17538
|
August 13, 2016
|
|
The hydroxides and carbonates of sodium and potassium are easily soluble in water while the corresponding salts of magnesium and calcium are sparingly soluble in water. Explain
|
|
0
|
4098
|
August 13, 2016
|
|
Explain why can alkali and alkaline earth metals not be obtained by chemical reduction methods?
|
|
0
|
2595
|
August 13, 2016
|
|
State any one reason for alkaline earth metals in general having a greater tendency to form complexes than alkali metals,
|
|
0
|
1319
|
August 13, 2016
|
|
Arrange the alkaline earth metals in the increasing orderof reactivity
|
|
0
|
715
|
August 13, 2016
|
|
Arrange the following in the increasing order of solubility in water:
|
|
0
|
1283
|
August 13, 2016
|
|
Starting with sodium chloride how would you proceed to prepare (i) Sodium metal, (ii) Sodium hydroxide, (iii) Sodium carbonate
|
|
0
|
4314
|
August 13, 2016
|
|
White balanced equations for reactions between:
|
|
1
|
466
|
August 13, 2016
|
|
Explain what happens when:
|
|
1
|
1793
|
August 13, 2016
|
|
What happens when (i) sodium metal is dropped in water
|
|
1
|
14768
|
August 13, 2016
|
|
Why is $N{{a}_{2}}$C${{O}_{3}}$ solution alkaline?
|
|
0
|
482
|
August 13, 2016
|
|
What is meant by brine?
|
|
0
|
591
|
August 13, 2016
|
|
What is the difference between baking soda and baking powder?
|
|
0
|
1284
|
August 13, 2016
|
|
Why is sodium thiosulphate used in photography?
|
|
0
|
1548
|
August 13, 2016
|
|
Why table salt becomes wet in rainy season?
|
|
0
|
2241
|
August 13, 2016
|
|
Potassium carbonate cannot be prepared by Solvay's process, why?
|
|
0
|
7015
|
August 13, 2016
|
|
In what ways lithium shows similarities to mag-nesium in its chemical behaviour?
|
|
0
|
3528
|
August 13, 2016
|
|
What are the common physical and chemical features of alkali metals?
|
|
0
|
7627
|
August 13, 2016
|
|
Explain the significance of sodium, potassium, magnesium and calcium in biological fluids
|
|
0
|
5887
|
August 13, 2016
|