List of practice Questions

In a class test, Veer scored 6 more than twice as many marks as Kevin scored. If one of them had scored 4 more marks, their total score would have been 40. Find the marks obtained by Veer and Kevin.
Aarush bought 2 pencils and 3 chocolates for Rs 11 and Tanish bought 1 pencil and 2 chocolates for Rs 7 from the same shop. Represent this situation in the form of a pair of linear equations. Find the price of 1 pencil and 1 chocolate, graphically.
In _ _ _ _ _ _ of the modern periodic table, are the non-metals found.
Calculate the equilibrium constant of the following reaction:
\[ \mathrm{Cu_{(s)} + 2Ag^+_{(aq)} \rightarrow Cu^{2+}_{(aq)} + 2Ag_{(s)}}, \qquad E^\circ_{\text{cell}} = 0.46\,V \]
How many Faradays are required to reduce 1 mol of \( Cr_2O_7^{2-} \) to \( Cr^{3+} \) in acidic medium?
Which of the following does not belong to Group 16 elements?
What is the full form of RFLP? State its basic principle and mention any two important applications.
How are virus-free plants produced from virus-infected plants? State any two advantages of virus-free plants.
Elaborate on the production of artificial seed and illustrate its structure with a well-labelled diagram.
Explain the steps involved in the development of Golden Rice through genetic engineering and mention its advantages in providing nutrition. How was Golden Rice further engineered?
Describe the steps involved in a Polymerase Chain Reaction (PCR) technique.
If a researcher starts with three double stranded DNA molecules, how many such molecules will be produced after 10 PCR cycles? Explain briefly.
Write the significance of using a turbidostat and a chemostat in continuous culture system.
Draw labelled graphical representations of Batch and continuous culture systems.
State the principle of mass spectrometry. Describe the procedure of Matrix Assisted Laser Desorption Ionisation (MALDI), explaining the significance of the matrix in this technique.
Why do cereals and legumes have limited nutritional quality? Describe two genetic engineering approaches used to improve protein quality in seeds.
What does the term 'fed' in fed-batch culture refer to?
What does the term 'fed' in fed-batch culture refer to?
Write the significance of using a turbidostat and a chemostat in continuous culture system.
Draw labelled graphical representations of Batch and continuous culture systems.
Describe the Blue-White selection method of screening for the presence of recombinant plasmids.
How can you differentiate between cancerous and non-cancerous cells in culture by microscopic examination? Give one example of each of such cell types.
Name the genes which fuse during translocation in Philadelphia chromosome.
During FISH technique, is any fluorescence detected in the der 9 chromosome? Why?
Briefly describe Nick Translation technique.