blue glass head

Which is a fair game? => Toss a coin twice. You win if you get head both times and your friend wins if he gets tail both times. or Toss a coin ten times. You win if you get head always and your friend wins if he gets 5 heads and 5 tails. or There are 2 green, 5 black, ..

Which of the following games is fair? => Toss a coin thrice. You win if you get 3 heads and your friend wins if he gets at least one head or tail. or Roll a dice. You win if you roll a 1 or 2. Your friend wins if he rolls a 3 or 4. or I don′t know. or Put 5 red and 2 ..

Which of the following games is unfair? => Toss a penny. You get 1 point for each head. Your friend gets 1 point for each tail. or I don′t know. or Put 3 red and 3 blue cubes in a bag. You win if you pick a red cube. Your friend wins if he picks a blue cube. or R..

A mirror whose polished, reflecting surface is a part of a hollow sphere of glass or plastic is called a spherical mirror. In a spherical mirror, one of the two curved surfaces is coated with a thin layer of silver followed by a coating of red lead oxide paint. Thus, one side of the sphe..

Scrape the inside of your cheek using an ice-cream spoon. Spread the tissue in a drop of water on a glass slide. Add a drop of methylene blue and place a cover slip. Observe the cells (epithelial) under the microscope. Epithelial cel..

Scrape the inside of your cheek using an ice-cream spoon. Spread the tissue in a drop of water on a glass slide...

Tests for Ammonia - Following are the tests for ammonia: 1. Ammonia gas has a characteristic pungent, irritating odour. 2. It changes the colour of: a) Moist red litmus paper blue. b) Turmeric paper brown. c) Methyl orange yellow. d) Colourless phenolphthalein deep pink. 3. A glass..

Ordinary air seems to be dry. It does not cause wetness on our body or clothes. However, you may have some idea about the huge quantity of rain, snow, dew, etc. that gets formed in a year throughout the world. All of it comes only from the air. Thus, the apparent dryness of air is very deceptive. A..

Silica (in the form of sand) Compounds of alkali metals, like Na 2 CO 3 , Na 2 SO 4 , NaNO 3 , K 2 CO 3 and KNO 3 . Compounds of alkaline earth metals, like CaCO 3 , CaO, BaCO 3 . (for glass with high refractive index) Oxides of heavy metals, like PbO, Pb 3 O 4 Calcium pho..

1. Diamond is the purest form of carbon. 2. It is the densest of all allotropes of carbon (specific gravity is 3.51). 3. Diamond's tetrahedral structure, makes it the hardest naturally occurring substance. It is brittle and transparent. 4. Pure diamond is colourless, but traces of dissolved impurit..