General Science - Online Test
Q1. The amount of oxygen that would be consumed if all the organic matter in one liter of water were oxidized by bacteria is called
Answer : Option D
Explaination / Solution:
Biological Oxygen Demand is the amount of oxygen that would be consumed if all the organic matter in one liter of water are oxidized by bacteria. it is used as indicator of water pollution. More the value of BOD higher the water polluted.
Q2. A rectangular conductor PQRS in which the conductor PQ is free to move is kept in a magnetic field B ,which is perpendicular to the PQRS which lies in a single plane. If the conductor PQ of length l is pushed by a force F then the power supplied is (assuming a circuit ressistance r)
Answer : Option D
Explaination / Solution:
P = Fv
Q3.
Straight or branched chain compounds, for example, the below ones are called
Answer : Option C
Explaination / Solution:
They are straight chain compounds known as aliphatic comounds.
Q4. In interaction of radiation with matter, radiation behaves as if it is made up of particles called
Answer : Option C
Explaination / Solution:
Photon is the small packet of energy. Rest mass of photon is zero but its kinetic mass is not zero. The photon travels with the speed of light.
Q5. That species which is found in highest concentration within a polluted water reservoir is called :
Answer : Option A
Explaination / Solution:
A number of organisms grow in polluted water. The species whose concentration is highest in polluted water is celled as index species as this species indicate the presence of particular kinds of pollutant in water.
Q6. According to Avogadro Law equal volumes ofall gases at the same temperature and pressure should contain ---------- number of molecules .
Answer : Option C
Explaination / Solution:
Avogadro's law states that " equal volumes of all gases at same temperature and pressure contain equal number of molecules. "
Q7. Which compound in the following pair reacts faster in SN2 reaction with OH– ?
i) CH3Br or CH3
ii) CH3Cl, (CH3)3CCl
i) CH3Br or CH3
ii) CH3Cl, (CH3)3CCl
Answer : Option A
Explaination / Solution:
For SN2 reaction leaving group should be good and alkyl halide should be primary.so CH3Br and CH3Cl are 10organic compounds hence rate of sn2 reaction will be more.
Q8. Which part of the Central Processing Unit (CPU) performs calculation and makes de-cisio
Answer : Option A
Explaination / Solution:
No Explaination.
Q9. In Digital type signals, signals can take
Answer : Option D
Explaination / Solution:
No Explaination.
Q10. Parthenogenesis is the development of unfertilized ovum into a fully formed haploid organism. Natural parthenogenesis is found in
Answer : Option C
Explaination / Solution:
Development of individual from unfertilized ovum is called parthenogenesis. The individual is haploid as no fusion of gametes occurs. Honey bee is of three kinds namely queen, drone and worker. Workers are produced parthenogenetically.
