The colour imparted to a flame by calcuium ion is
The colour imparted to a flame by calcuium ion is A. green B. blue C. brick-red D. yellow…
Browsing Category
Answers
44896 posts
In the reaction M + N P;∆H = + QKJ. Which of the following would…
In the reaction M + N P;∆H = + QKJ. Which of the following would increase the concentration…
Which of the following relationships between the pressure P, the volume V and the temperature…
Which of the following relationships between the pressure P, the volume V and the temperature T, represents an…
A mixture of common salt, ammonium chloride and barium sulphate can best be separated by
A mixture of common salt, ammonium chloride and barium sulphate can best be separated by A. addition of…
An unknown organic compound X has a relative molecular mass of 180. It is a…
An unknown organic compound X has a relative molecular mass of 180. It is a colourless crystaline solid,…
The three-dimensional shape of methane is
The three-dimensional shape of methane is A. hexagonal B. trigonal C. linear D. tetrahedral E. cubical Correct Answer:…
Some copper (ll) sulphate pentahydrate (CuSO4 5H2O), was heated at 120 oC with the following…
Some copper (ll) sulphate pentahydrate (CuSO4 5H2O), was heated at 120 oC with the following results. Wt of…
If an element has the electronic configuration 1s 2 2s2 2p3 3s2 3p4, it is
If an element has the electronic configuration 1s 2 2s2 2p3 3s2 3p4, it is A. a metal…
Consecutive members of an alkane homologous serires differ by
Consecutive members of an alkane homologous serires differ by A. CH B. CH2 C. CH3 D. CnHn E.…
The flame used by welders in cutting metals is
The flame used by welders in cutting metals is A. butane gas flame B. acetylene flame C. kerosene…