Question
How is ionic bond formed in sodium fluoride? (The atomic number of F and Na are 9 and 11 respectively)
How is ionic bond formed in sodium fluoride? (The atomic number of F and Na are 9 and 11 respectively). OR C…
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Question
What type of chemical bond is present in NH3? Draw Lewis electron dot diagram of NH3
What type of chemical bond is present in NH3? Draw Lewis electron dot diagram of NH3. (The atomic number of H and…
Question
Why are the elements of group 2 of the long periodic table called alkaline earth metals?
Why are the elements of group 2 of the long periodic table called alkaline earth metals? [2] OR Give example of a…
Question
Give the definition of electromotive force of an electric cell in open circuit.
Give the definition of electromotive force of an electric cell in open circuit.
Question
Determine the angle of deviation for the refraction of light rays from rarer to denser medium
Determine the angle of deviation for the refraction of light rays from rarer to denser medium. [2] (angle of incidence = i,…
Question
At a pressure of 770 mm Hg, a fixed mass of hydrogen gas occupies a volume of 75cm at 27°C. What volume will the mass of hydrogen gas occupy at that temperature and 750 mmHg pressure?
At a pressure of 770 mm Hg, a fixed mass of hydrogen gas occupies a volume of 75cm at 27°C. What volume…
Question
What reaction occurs at the cathode in the electrolyte method of extraction of aluminium?
What reaction occurs at the cathode in the electrolyte method of extraction of aluminium? [1] OR Write whether the following statement is…
Question
The electrical conductivity of solid NaCl is greater than the electrical conductivity of fused NaCl. True or False
Write whether the following statement is True or False : The electrical conductivity of solid NaCl is greater than the electrical conductivity…