General Science - Online Test
Q1. Three states of matter are the result of?
Answer : Option D
Explaination / Solution:
Three states of matter are the result of balance between intermolecular forces and the thermal energy of the molecules. These two factors differentiate them from each other. For understanding, The strongest intermolecular forces are in solid then in liquid and weakest in gases.
Q2. The boiling point of water at atmospheric pressure
Answer : Option C
Explaination / Solution:
Water and water vapour are in equilibrium position at atmospheric pressure (1.013 bar) and at 100°C in a closed vessel. The boiling point of water is 100°C at 1.013 bar pressure. For any pure liquid at one atmospheric pressure (1.013 bar), the temperature at which the liquid and vapours are at equilibrium is called normal boiling point of the liquid. Boiling point of the liquid depends on the atmospheric pressure.
Q3. Nitro compounds are reduced by iron scrap and hydrochloric acid to yield one of the following compounds.
Answer : Option D
Explaination / Solution:
Scrap iron with HCl acts as a reducing agent to reduce nitro group to amine.
Q4. A group of cells having a common origin and usually performinga common function is
Answer : Option C
Explaination / Solution:
A tissue is an ensemble of similar cells from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple tissues.
Q5. Measurement and the comparison of total growth per unit time is called
Answer : Option A
Explaination / Solution:
Absolute growth rate refers to the measurement and comparison of total growth per unit time.
Thus, Absolute growth = Growth in given time period.
Relative growth rate refers to the growth of a particular system per unit time, expressed on a common basis
Q6. In Geiger-Marsden experiment, actual results was
Answer : Option D
Explaination / Solution:
No Explaination.
Q7. International Code of Biological Nomenclature is applied to
Answer : Option A
Explaination / Solution:
Since biology deals with both plants and animals, the international code of biological nomenclature is applied to both plants and animals. Hence, the correct option is Both (2) and (3).
Q8. The number of possible conformational isomers of ethane is
zero
two
Explanation:
conformational isomers are obtained by rotation about a carbon-carbon single bond.This results in infinite number of momentary arrangements of atoms in space.Hence for ethane infinite number of conformations are possible.
Answer : Option A
Explaination / Solution:
conformational isomers are obtained by rotation about a carbon-carbon single bond.This results in infinite number of momentary arrangements of atoms in space.Hence for ethane infinite number of conformations are possible.
Q9. Raoult’s law states that for a solution of volatile liquids the partial pressure of each component in the solution is
Answer : Option D
Explaination / Solution:
Raoult’s law states that for a solution of volatile liquids the partial pressure of each component in the solution is directly proportional to mole fraction of component.
Q10. The birth rate in 1991 declined to
Answer : Option B
Explaination / Solution:
Birth rate refers to the number of live births per thousand of population per year. In 1991 it declined to 9.8
