681: The coal mining areas of the Damodar Valley region include
(a) Korba, Sonhat and Raigarh
(b) Singareni, Tandur and Sasti
(c) Raniganj, Jharia and Giridih
(d) Talcher. Ghanda and Sambalour
682: Terrace cultivation is practised mostly
(a) In urban areas
(b) On slopes of mountains
(c) On tops of hills
(d) In undulating tracts
683: Which tax is not levied by the Central Government?
(a) Wealth tax
(b) Profession tax
(c) Income tax
(d) Excise duty
684: Who among the following was not a moderate?
(a) Mahatma Gandhi
(b) W. C. Bannerjee
(c) G. K. Gokhale
(d) B. G. Tilak
685: Examine the following three statements:
I. Processed meat is a perishable food.
II. All perishable foods are packed in sealed tins.
III. Sealed tins sometimes do not contain processed meat.
Which one of the following inferences can be drawn from the above statements?
(a) Sealed tins always contain perishable food
(b) Processed meat is sometimes not packed in sealed tins
(c) Processed meat is always packed in sealed tins
(d) Non-perishable foods are never packed in sealed tins