A student took four test tubes P, Q, R and S and filled about 8 mL of distilled water in each. After that he dissolved an equal amount of Na2SO4 in P, K2SO4 in Q, CaSO4 in R and MgSO4 in S. On adding an equal amount of soap solution and shaking each test tube well, a good amount of lather will be obtained in the test tubes,
P and Q
P and R
P, Q and S
P, Q and S
A.
P and Q
On adding 2mL acetic acid to 2mL of water in a test tube, it was observed that
a clear and transparent solution is formed.
a white precipitate is formed almost immediately.
two separate layers were formed.
two separate layers were formed.
A.
a clear and transparent solution is formed.
On adding acetic acid to sodium hydrogen carbonate in a test tube, a student observes.
no reaction
a colourless gas with pungent
bubbles of a colourless and odourless gas
bubbles of a colourless and odourless gas
C.
bubbles of a colourless and odourless gas
Mustard oil and calcium hydroxide
Castor oil and calcium hydroxide
Turpentine oil and sodium hydroxide
Turpentine oil and sodium hydroxide
D.
Turpentine oil and sodium hydroxide
Write the name and formula of the 2nd member of homologous series having general formula CnH2n.
Alkene series has the general formula of CnH2n. Propene is the second member of the alkene family and has C3H6 as the molecular formula.