A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.
Name the gas formed in the reaction. How would you test the gas ?

A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed. Write an equation for the reaction.

A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed. What do you observe when a few drops of red litmus solution are added to the turbid solution ?

When zinc metal is treated with a dilute solution of a strong acid, a gas is evolved which is utilised in the hydrogenation of oil. Name the gas evolved . Write the chemical equation of the reaction involved and also wrote a test to detect the gas formed.

Ammonia gas dissolves in water to form NH_(4)OH . In this reaction water acts as

2 mL of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube. When the contents are warmed, a gas evolves which is bubbled through a soap solution before testing. Write the equation of the chemical reaction involved and the test to detect the gas. Name the gas which will be evolved when the same metal reacts with dilulte solution of strong acid.

When you add sodium hydrogen carbonate to acetic acid in a test tube, a gas liberates immediately with a brick effervescence. Name this gas. Describe the method of testing this gas.

A small piece of cesium metal phi=1.9eV is kept at a distance of 20 cm form a large metal plate having a charge density of 1.0xx 10^-9 C m^-2 on the surface facing the cesium piece. A monochromatic light of wavelength 400nm is incident on the cesium piece. Find the minimum and the maximum kinetic energy of the photoelectrons reaching the large metal plate. Neglect any change in electric field due to the small piece of cesium present.

A wooden block in the form of a uniform cylinder floats with one-third length above the water surface. A small chip of this block is held at rest at the bottom of a container containing water to a height of 1 m and is then released. The time in which it will rise to the surface of water is =10 m//s^(2) )

Write the name of the product formed and give balanced equation of the reaction when : calcium is reacted with cold water

A metal whose alloy finds use in the construction of air crafts in the powdered form is added to sodium hydroxide solution. A colourless gas was evolved. After the reaction was over, the solution was colourless Name the gas evolved.