What are Viva questions for chemistry?
Viva Questions with Answers on Quantitative Estimation (Volumetric Analysis)
- Ans.
- What is the maximum weight that can be weighed in a chemical balance?
- What is the weight of a rider?
- What is the use of a rider?
- What is the principle of volumetric analysis?
- What is titration?
- What is indicator?
- What is end point?
What is titration Class 12?
Titration is the process or a technique to determine the concentration of an unknown solution, with the use of a solution of known concentration. The concentration of an unknown solution is determined only by knowing the volume of titrant used.
What is volumetric titration?
Definition: The process of determining the quantity of a sample by adding measured volumes of a titrant (normally via a burette) until the end-point, at which essentially all of the sample has reacted, is reached.
What is rider in chemistry?
Rider: The riders are the sliding pointers positioned on top of the beams to show the pan and beam weight in grams. It is a loop of a small aluminium wire and usually weighs 10 mg. It can be easily seated on the balance beam.
How do you pass chemistry practicals?
For you to pass your chemistry PRACTICAL exams, you need to get conversant with your laboratory equipment, grasp the concepts and the different formulas for certain topics. Chemistry is not a difficult subject to pass, the right approach to passing your chemistry exams is to keenly do your review.
Why kmno4 is used in burette?
2 Answers. The reason for this is because kmno4 is a coloured substance and as well as a self indicator,while mohr`s salt is colourless and an indicator can be used to get an accurate end point. But if kmno4 is taken in conical flask,it wolud be very difficult to observw the reaction completion.
What is end point in chemistry?
end point: the point during a titration when an indicator shows that the amount of reactant necessary for a complete reaction has been added to a solution.
What is lab balance?
Laboratory balances are normally used to measure the weight or mass of an object to a very high degree of accuracy. A few common balances used in labs today are precision balances, compact balances, and analytical balances with readability of 0.001 g, 0.01g, and 0.0001 g respectively.
Who discovered balance?
The invention of the equal-arm balance dates back at least to the time of the ancient Egyptians, possibly as early as 5000 bc.
What are the 3 main branches of chemistry?
Branches of Chemistry
- Organic Chemistry.
- Inorganic Chemistry.
- Physical Chemistry.
What is the colour of KMnO4?
intense purple
The colour of KMnO4 is intense purple due to L→M (ligand to metal) charge transfer 2p(L) of O to 3d(M) of Mn.
What is strength of KMnO4?
(b) Strength of KMnO4 solution: Strength = Normality x Equivalent mass. Equivalent mass of KMnO4 = = 158/5. = 31.6.