Refractive index of diamond is 2.42. Explain this statement.
Give two examples where refraction is seen in daily life.
ImRitz
Asked:
December 2022
State the reasons for following: -(i) The position of fish in a pond is not same as it is observed from outside.(ii) A Bubble of air shines in water.(iii) Mirage is an illusion.
ImRitz
Asked:
December 2022
Describe the steps in the process of glass manufacture under each of the following headings:(i) Necessary materials(ii) Substances that give or impart colour to glass(iii) The chemical reaction taking place in tank furnace
ImRitz
Asked:
December 2022
The pH of soil in Tikeshweri's field is 4.2. How can she control the pH of her soil so that she gets a good paddy crop?
Give few examples of effects of heat seen in our daily life.
ImRitz
Asked:
December 2022
Compound X, which is used for drinking, has pH value 7. Electrolysis of an acidic solution of X gives gases Y and Z. The volume of Y is twice that of Z. Y burns rapidly while Z supports burning. Identify X, Y and Z and write the equations for the...
ImRitz
Asked:
December 2022
A compound of sodium, 'X', is a white powder and an important component of baking pow-der. When 'X' is heated, a gas 'Y' is produced that turns lime water milky.(i) Write the chemical equation for the reaction which takes place on heating.(ii) Why is 'X' used as an antacid?
ImRitz
Asked:
December 2022
What is the difference between absolute refractive index of a medium and the relative refractive index of two mediums? What is the relation between them?
ImRitz
Asked:
December 2022
Choose the correct option:(i) The chemical formula of baking soda is:(a) NaHSO4 (b) Na2CO3(c) NaHCO3 (d) Na2CO3 .10H2O(ii) The chemical substance that is used for disinfecting drinking water to make it free ofgerms is:(a) CaCl2 (b) CaOCl2(c) FeCl3 (d) MgCl2(iii) Glass is a(a) Liquid (b) Solid(c) Transparent carbon polymer (d)...
ImRitz
Asked:
December 2022
The refractive indices of medium A and B are nA and nB respectively. Total internal reflection is possible on going form which medium to which medium given that nA > nB .
ImRitz
Asked:
December 2022
The figure shows a part of the periodic table:If we move horizontally from left to right(i) How does the metallic character of the elements change?(ii) How does electronegativity change?(iii) How does electron affinity change?
What do you understand by critical angle?
Write three uses of specific heat of water in daily life.
ImRitz
Asked:
December 2022
If we increase the distance between the mirror the object then what would be the effect on the distance between the image and the object?
ImRitz
Asked:
December 2022
Bring out the irony in the frog's statement - 'your song must be your own'.
ImRitz
Asked:
December 2022
Choose the correct option-(i) Ratio of linear, area and volume expansion in solids is-(a) 1:1:1 (b) 1:2:3 (c) 1:2:1 (d) 3:2:1(ii) Amongst object A and B, if the specific heat of object A is less than of object B, then-(a) Object A will get warm sooner (b) Object B will...
ImRitz
Asked:
December 2022
Discuss the following questions -(i) What would be the effect on the circuit if one bulb out of three bulbs arranged in a series combination becomes fused?(ii) What would be the effect if one bulb out of three arranged in parallel combination malfunctions?
ImRitz
Asked:
December 2022
What is the process of making Plaster of Paris? Why is it stored in air-tight containers?
ImRitz
Asked:
December 2022
What is the chemical name for washing soda? Name the three main raw materials used to produce washing soda by the Solvay ammonia process.