1. State true or false.
A unit cell of an ionic crystal shares some of its ions with other unit cells.
2. State true or false.
Fe3+ ion gives red colour with potassium thiocyanate.
3. State true or false.
The electronic configuration of Cr is [Ar] 3d5 4s1.
4. Among the following compounds, which will react with acetone to give a product containing >C = N – :
(A) C6H5NH2 (B) (CH3)3 N
(C) C6H5NHC6H5 (D) C6H5NHNH2
5. Which of the following compounds will show geometrical isomerism:
(A) 2-butene (B) propone
(C) 1-phenylpropene (D) 2-methyl-2-butene
Source: 1998 JEE