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During the day (daylight) the sky has a blue appearance because the Sun’s light (white light) is made up of rainbow of colors (red, orange, yellow, green, blue, indigo and violet)...
1 Answers 1 viewsSolution: For an m×n chessboard there are 2m+2n−2 ways. Case I. There are two horizontally adjacent squares of the same color: 2m−2 ways. Case II. There are two vertically adjacent squares of the same color: 2n−2 ways. Case III. None of the...
1 Answers 1 viewsThe oxide of the element is basic as it turns red litmus blue .This means that the element is a metal (M).
1 Answers 2 viewsSince soap is basic in nature, it will turn red litmus blue. However, the colour of blue litmus will remain blue.
1 Answers 1 views(d) starch,is the correct option.
1 Answers 1 views(c) violet and blue lights get scattered more than lights of all other colours by the atmosphere
1 Answers 1 viewsThe molecules of air and other fine particles in the atmosphere have a size smaller than the wavelength of visible light. These are more effective in scattering light of shorter...
1 Answers 1 viewsThe sky appears dark instead of blue to an astronaut because there is no atmosphere in the outer space that can scatter the sunlight. As the sunlight is not scattered, no...
1 Answers 1 viewsA die has six faces that are numbered from 1 to 6, with one number on each face. Let us denote the red, white, and blue dices as R, W,...
1 Answers 1 viewsBecause water molecules act as ligands and results in crystal Fleld splitting of d-orbitals of Cu2+ ion.
1 Answers 1 views