
A student working in a lab had three tubes with the following preparations:
(i) Freshly extracted nucleic acids dissolved in a buffer.
(ii) Chlorophyll extracted from spinach leaf.
(iii) Red coloured anthocyanin from onion cells.
The student used a spectrophotometer to determine the wavelength of light at which each preparation would show maximum absorption (absorption spectrum). She noted down the values in her notebook. However, when she came to the lab the next day, she realised that she had not mentioned the name of the sample preparation against each value. The values she recorded were 480 nm, 260 nm, and 642 nm. The respective values for the sample (i), (ii), and (iii) would most likely be:

Important Questions on Use a model to illustrate how photosynthesis transforms light energy into stored chemical energy.

Directions: Each of the following sentences in this section has a blank space and four words or group of words given after the sentence. Select the word or group of words you consider most appropriate for the blank space and indicate your response on the Answer Sheet accordingly.
Every rash driver becomes a ____ killer.







Two sentences are given below and you are required to find the correct sentence which combines both the sentences.
Which is the correct combination of the given two sentences?
He is too tired. He could not stand.


In the following sentence, a blank space with four options is given. Select whichever preposition or determiner you consider the most appropriate for the blank space.
These are the good rules to live _____.

The graph below represents the absorption spectrum of a major pigment contributing to photosynthesis.
Which one of the following best represents the photosynthetic efficiency of the pigment?









