General Science - Online Test
Q1. How is rapidly rising population responsible for prise rise in India
Answer : Option A
Explaination / Solution:
No Explaination.
Q2.
If the velocities of two particles A and B are respectively and velocity of object B relative to object A is
Answer : Option D
Explaination / Solution:
Relative velocity of a body A with respect to another body B, when both are in motion, is the velocity with which A appears to move to B.
In general,
Q3.
Beats arise when two waves having slightly different frequencies, and and comparable amplitudes, are superposed. The beat frequency is
Answer : Option B
Explaination / Solution:
No Explaination.
Q4. Chromosome theory of XY sex determination was proposed by
Answer : Option A
Explaination / Solution:
Nettie Stevens and Edmund Beecher Wilson independently discovered the chromosomal XY sex-determination system (that males have XY and females have XX sex chromosomes).
Wilson made some of the discoveries in his partially correct 1900 paper, while Steven’s 1905 paper filled in the blanks and corrected some of Wilson’s errors.
Stevens and Wilson worked independently of each other in their discovery of the chromosomal basis of sexual differentiation.
Q5.
Light with an energy flux of 18 W/ falls on a nonreflecting surface at normal incidence. If the surface has an area of 20 , Average force exerted on the surface during a 30 minute time span is
Answer : Option C
Explaination / Solution:
No Explaination.
Q6. Blood pressure is expressed as the ratio of systolic over diastolic pressure. The difference between systolic and diastolic pressure is called pulse pressure. What will be its value for a normal healthy adult?
Answer : Option A
Explaination / Solution:
Pulse pressure is the difference between the systolic and diastolic pressure readings. It is measured in millimeters of mercury (mmHg). It represents the force that the heart generates each time it contracts. If resting blood pressure is (systolic-diastolic) 120-80 millimeters of mercury (mmHg), pulse pressure is 40
Q7. The most important of the symbiotic nitrogen fixing bacteria which forms nodules on the roots of legume plants is
Answer : Option D
Explaination / Solution:
Rhizobium are bacteria that fix nitrogen after becoming established inside root nodules of legumes. In order to express genes for nitrogen fixation, rhizobia require a plant host; they cannot independently fix nitrogen
Rhizobium bacteria is found in the nodule of leguminous plants root. It increases the fertility of soil.
Q8. Which compound consists of 5 carbon atoms?
Answer : Option B
Explaination / Solution:
Alpha-ketoglutaric acid is an important biological compound and is a key intermediate in the Krebs cycle. Alpha-ketoglutaric acid occurs naturally within cells.
One of its functions is to combine with ammonia to form glutamic acid and then glutamine. Another function is to combine with nitrogen released in the cell, therefore preventing nitrogen overload.
Q9. The shape of the below molecule is
Answer : Option C
Explaination / Solution:
Bent shape is the shape of a molecule with 3 atoms that have a bond angle less than 180°.
Q10. Polarity of the capacitor in the situation described by the adjacent figure is
Answer : Option C
Explaination / Solution:
A will become positive with respect to B because current indused is in clockwise direction
