Which has the maximum number of molecules among the following?
10g of hydrogen and 64 g of oxygen were filled in a steel vessel and exploded. Amount of water produced in this reaction will be :-
An organic compound contains carbon, hydrogen and oxygen. Its elemental analysis gave C, 38.71% and H, 9.67%. The empirical formula of the compound would be :-
How many moles of lead (II) chloride will be formed from a reaction between 6.5 g of PbO and 3.2 g of HCl ? (Atomic wt. of Pb=207)
The mass of carbon anode consumed (giving only carbondioxide) in the production of 270 Kg of aluminium metal from bauxite by the Hall process is :
The label of a herbarium sheet does not carry information on
Study the four statements (A-D) given below and select the two correct ones out of them.
Nomenclature is governed by certain universal rules. Which one of the following is countary to the rules of nomenclature ?
Which one of the following is not a correct statement ?
Which one of the following animals is correctly matched with its particular named taxonomic category
Two plants can be conclusively said to belong to the same species if they:
The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for:
Which of the following is not true for a species?