Which of the following can be separated by ” Sublimation Method”?
Which of the following can be separated by ” Sublimation Method”?A. Sand and Iron Filing
B. Sand and Naphthalene
C. Both A & B
D. None
B. Sand and Naphthalene
C. Both A & B
D. None
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The solvent or mixture of solvents used for separation of compounds is called____________________?
The solvent or mixture of solvents used for separation of compounds is called____________________?A. Stationary phase
B. Mobile phase
C. Dynamic phase
D. Static phaseThe PH of the 1.3 × 10-4 NH4Cl is__________?
The PH of the 1.3 × 10-4 NH4Cl is__________?A. 1.3
B. 4.0
C. 2.886
D. 3.886Who discovered carbohydrates fats and proteins?
Who discovered carbohydrates fats and proteins?A. William Prout
B. Jons Jacob Berzelius
C. Anselme Payen
D. Walter Bradford CannonThe Chemical Formula of Sand is___________?
The Chemical Formula of Sand is___________?A. Si2O3
B. SiO2
C. Al2O3
D. Sr2OThe chemical compound silicon dioxide, also known as silica (from the Latin silex), is an oxide of silicon with a chemical formula of SiO2 and has been known for its hardness since antiquity. Silica is most commonly found in nature as sand or quartz, as well as in the cell walls of diatoms.
Greater value of standard reduction potential greater will be tendency__________________?
Greater value of standard reduction potential greater will be tendency__________________?A. to get oxidized
B. to get reduced
C. to accept electrons
D. both B and CThe mass of 3.2 moles of ammonia (NH3) gas?
The mass of 3.2 moles of ammonia (NH3) gas?A. 53.4 grams
B. 54.4 grams
C. 55.4 grams
D. 56.4 grams