Multiple Choice QuestionsThe cumulative profits of a company since its inception are shown in the diagram. If the net worth of the company at the end of 4th year is 99 Crores, the principal it had started with was:
9.0crores
99 crores
90 crores
9.9 crores
Popular use of which of the following fertilizers increase the acidity of soil?
Potassium nitrate
Ammonium sulphate
Urea
Superphoshate of lime
Exposing an organism to a certain chemical can change nucleotide bases in a gene, causing mutation. In one such mutated organism if a protein had only 70% of the primary amino acid sequence, which of the following is likely?
Mutation broke the protein
The organism could not make amino acid
Mutation created a terminator codon
The gene was not transcribed
The speed of a car increases very minute as shown in the following table. The speed at the end of the 19th minute would be
| Times (minutes) | Speed(m/sec) |
| 1 | 1.5 |
| 2 | 3.0 |
| 3 | 4.5 |
| - | - |
| - | - |
| 24 | 36.0 |
| 25 | 37.5 |
26.5
28.0
27.0
28.5
If the atmospheric concentration of carbon dioxide is doubled and there are favourable conditions of water, nutrients, light and temperature, what would happen to water requirement of plants?
It decrease initially for short time and then return to original value
It increases
It decreases
It increases initally for short time and then return to orginal value.
Diabetic patients are advised a low glycaemic index diet. The reason for this is:
They requires less carbohydrate than healthy individuals
They cannot assimilate ordinary carbohydrates
They need to have slow, but sustained release of glucose in their blood stream.
They can tolerate lower, but not higher than normal blood sugar level.
C.
They need to have slow, but sustained release of glucose in their blood stream.
It's important to include low glycaemic index foods as they take a lot of time to digest and absorb slowly in the body, causing a gradual increase in the blood sugar level. High glycemic index foods, on the other hand tend to spike the blood glucose level, which may cause the body to function abruptly.
Glucose molecules diffuse across a cell of diameter d in time τ. If the cell diameter I tripled, the diffusion time would
Increase to 9 τ
Decrease to τ/3
Increase to 3 τ
Decrease to τ/9
The reason for the hardness of diamond is
Extended covalent bonding
Layered structure
Formation of cage structure
Formation of tubular structure
Which of the following particles has the largest range in a given medium if their initial energies are the same?
Alpha
Gamma
Positron
Electron
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