List of practice Questions

Match the items from Column - 1 with Column - II and select the correct option.

A woman experiences her menstrual cycle starting at 14 years and menopause at the age of 46. At the start of menstruation, she can conceive and has children. During her reproductive period, how many ova are produced?

For a normal pregnancy, data compression does not happen, so which hormone does the doctor inject to stimulate the pregnancy?

In the given diagram, identify the structure labeled 'X' and select the correct number of cells.

In a pond, there were 40 lotus plants in the previous year. If the reproduction rate is such that 6 new plants are added each year, what will be the birth rate of the plants?

Which of the following types of food supports the largest population?

Which of the following is not a component of the digestive system?

Which of the following conditions is associated with "overeating"?

The event of species extinction differs from the earlier extinction and the first five extinctions because the main difference is that this extinction...

What did Alexander von Humboldt first describe?

If a PCR reaction is carried out 30 times, how much can the DNA sequence increase?

Which microorganism is used in plant genetic engineering?

Identify the incorrect statement related to the following context:
The model experiment for assessing certain types of genetically modified animals can be conducted.

The effect of toxin B on a certain type of bacteria is mentioned. The toxin does not affect the bacteria due to its specific mechanism.

What method is used for the production of "Pomato"?

Choose the correct option that describes the mutual benefit or harm between two organisms: "One benefits while the other neither benefits nor suffers."

In the reaction, what is the oxidation state of Mn in the compound MnO\(_2\)?

For the complex \( [Co(NH_3)_6]^{3+} \), what is the oxidation state of Co and the number of unpaired electrons?

What is the electronic configuration for \( [Ni(CN)_4]^{2-} \)?

The study of DNA, particularly regarding the mechanism of transgenics, and the techniques associated with gene therapy, etc.

What is the role of nitrogen-fixing bacteria in the ecosystem?

What is the role of PCR in the amplification of DNA?

The half-life of a radioactive substance is 5730 years. If carbon-14 decays and only 80% of it remains after a certain period, what is the time elapsed (in years)?

Which of the following is the correct relationship in terms of the physical properties of a substance?

For the given reaction, what is the correct rate law?
\[ \frac{d[A]}{dt} = -6 \frac{d[B]}{dt} = -4 \frac{d[C]}{dt} = 3 \frac{d[D]}{dt} = 4 \frac{d}{dt} \]