Q4.To reduce the poverty in rural areas various steps have been taken one of them is
Answer : Option AExplaination / Solution:
The nine important measures which should be taken to reduce poverty in India are as follows: 1. Accelerating Economic Growth 2. Agricultural Growth and Poverty Alleviation 3. Speedy Development of Infrastructure 4. Accelerating Human Resource Development 5. Growth of Non-Farm Employment 6. Access to Assets 7. Access to Credit 8. Public Distribution System (PDS) 9. Direct Attack on Poverty: Special Employment Schemes for the Poor.
Q5.The megasporangium of naked seed plants are called
Answer : Option BExplaination / Solution:
The cones bearing megasporophylls with ovules or megasporangia are called macrosporangiate or female strobili.
Q6.The process of movement of few ions or molecules across the membrane against concentration gradient from higher to lower concentration, it is called
Answer : Option AExplaination / Solution:
The solutes may move across the membrane by the process of simple diffusion along the concentration gradient, i.e., from higher concentration to the lower.
Q7.Which of the following is the difference between primary and secondary data?
Answer : Option DExplaination / Solution:
Since primary data is collected by the investigator according to his/her objectives, the data is more reliable than secondary data.
Q8.Using land for the production of wheat implies foregoing the opportunities of using it for the production of rice It is an example of which cost ?
Answer : Option CExplaination / Solution:
Opportunity cost refers to cost of next best alternative forgone .
Example- Using land for the production of wheat implies foregoing the opportunities of using it for the production of rice.
Q9.Why are UGA, UAG and UAA called termination codons?
Answer : Option DExplaination / Solution:
The three codons, UAA known as ochre, UAG as amber and UGA as opal, that do not code for an amino acid but act as signals for the termination of protein synthesis. So they also Known bas termination codon.
They are not represented by any tRNA and termination is catalysed by protein release factors.
Q10.An inductor with L = 9.50 mH is connected across an ac source that has voltage amplitude 45.0 V. Frequency of the source that results in a current amplitude of 3.90 A is
Answer : Option BExplaination / Solution:
V=45voltL=9.5mHi=3.9Af=?V=iXL=i×ωL=i×2πfL
Frequency of the source
f=Vi×2πL=453.9×2×3.14×9.5×10−3=0.193×103f=193Hz
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