The product obtained as a result of a reaction of Nitrogen with cac2 is *
1 point
A CaCN
B CaCN3
C Ca2CN
D CaCN2
This is a required question
3. All heating which of the following releases CO2 most easily *
1 point
A K2CO3
B Na2CO3
C MgCO3
D CaCO3
4. Which of the following statements is false *
1 point
A Ca2+ ions are important in blood clotting
B Ca2+ ions are not important in maintaining the regular beating of the heart
C Mg2+ ions or important in the green parts of plant
D Mg2+ ions form a complex with a ATP
5. Which one of the following has minimum value of size of cation /anion ratio *
1 point
A NaCl
B KCl
C MgCl2
D CaF2
6. Washing soda has formula *
1 point
A Na2CO3.7H2O
B Na2CO3.10H2O
C Na2CO3.3H2O
D Na2CO3
7. Which of the following has largest size *
1 point
A Na
B Na+
C Na-
D cannot be predicted
8. Which of the following elements is extracted commercially by the electrolysis of an aquaous solution of its compound *
1 point
A Cl
B Br
C Al
D Na
9. In which of the following the hydration energy is higher than the lattice enthalpy *
1 point
A BaSO4
B MgSO4
C RaSO4
D SrSO4
10. Identify the correct statement *
1 point
A gypsum is obtained by heating plaster of Paris
B plaster of paris can be obtained by hydration of gypsum
C plaster of paris is obtained by partial oxidation of gypsum
Gypsum gypsum contains a lower percentage of calcium than plaster of Paris
Answers
Answer:
Name: Dicyandiamide
Molecular Formula:C2H4N4
Molecular Weight:84.08
CAS No.:461-58-5
EC Code:207-312-8
HS Code:29262000
Appearance: White Crystal
Application: Dicyandiamide is an intermediate for synthesis of medicines. It is used in the production of a wide range of organic chemicals including slow and continuous nitrogen release fertilizer, pesticides, dye fixing, fire proofing agents, epoxy laminates for circuit boards, powder coatings and adhesives, water treatment chemicals, leather and rubber chemicals, explosives and pharmaceuticals.
Packing: Net 25kg, 500kg or 1,000kg plastic woven bag
Store: In a cool, dry, well ventilated warehouse, and keep away from moisture.
Main Item Index:
Purity
% ≥
Moisture
% ≤
Ash Content
%≤
Calcium Content
PPM ≤
Melting Point
ºC
99.5
0.3
0.05
200
209-212
Explanation:
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