Does our blood have proteases and nucleases
Find out from internet what is golden rice.
Can you suggest a method to remove oil (hydrocarbon) from seeds based on your understanding of rDNA technology and chemistry of oil?
Diagrammatically represent the experimental steps in cloning and expressing an human
gene (say the gene for growth hormone) into a bacterium like E. coli ?
Diagrammatically represent the experimental steps in cloning and expressing an human
What is gene therapy? Illustrate using the example of adenosine deaminase (ADA) deficiency.
What are Cry proteins? Name an organism that produces it. How has man exploited this
protein to his benefit?
Compare and contrast the advantages and disadvantages of production of genetically modified crops.
What are transgenic bacteria? Illustrate using any one example.
Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because −
(a) bacteria are resistant to the toxin
(b) toxin is immature:
(c) toxin is inactive:
(d) bacteria encloses toxin in a special sac.
In which case of mixing of a strong acid and a base each of 1 N concentration, temperature increase is highest.
The heat of combustion of carbon is 394 kJ. The heat evolved in combustion of 6.023 *10^22 atoms of carbon is
The difference between the heat of reaction of constant pressure and constant volume for the reaction
The heat of neutralisation of HCl by NaOH is –12.1 kJ/mole, the energy of dissociation of HCN is
The dissociation energy of CH4 and C2H6 are respectively 360 & 620 k. cal/mole. The bond energy of C–C is
The heat of combustion of propane C3H8(g) is 
= –2280 kJ /mol. For the combustion of 1.00 m3 of C3H8(g) measured at 25° C annd 1 atm pressure, =
The heat of combustion of CS2 is –3.24 kcal. For the reaction,
If the enthalpy of vaporistion for water is 186.5 kJ/mol, its entropy of vaporistion will be
If 
for a reaction then:
Calculate the maximum work done by the system when 2 mole of ideal gas expands from 2.4 dm3 to 5.6 dm3 at 10°C reversibly. Also calculate the heat change. Repeat the above calculations at 110°C.
How do biofertilisers enrich the fertility of the soil?
Arrange the following in the decreasing order (most important first) of their importance, for the welfare of human society. Give reasons for your answer. Biogas, Citric acid, Penicillin and Curd
Find out the role of microbes in the following and discuss it with your teacher.
(a) Single cell protein (SCP)
(b) Soil
Three water samples namely river water, untreated sewage water and secondary effluent discharged from a sewage treatment plant were subjected to BOD test. The samples were labelled A, B and C; but the laboratory attendant did not note which was which. The BOD values of the three samples A, B and C were recorded as 20mg/L, 8mg/L and 400mg/L, respectively. Which sample of the water is most polluted? Can you assign the correct label to each assuming the river water is relatively clean?
Microbes can be used to decrease the use of chemical fertilisers and pesticides. Explain how this can be accomplished.
Do you think microbes can also be used as source of energy? If yes, how?
What is the key difference between primary and secondary sewage treatment?
What is sewage? In which way can sewage be harmful to us?
Name any two species of fungus, which are used in the production of the antibiotics.
In which way have microbes played a major role in controlling diseases caused by harmful bacteria?
Name some traditional Indian foods made of wheat, rice and Bengal gram (or their products) which involve use of microbes
In which food would you find lactic acid bacteria? Mention some of their useful applications
Give examples to prove that microbes release gases during metabolism.
Bacteria cannot be seen with the naked eyes, but these can be seen with the help of a microscope. If you have to carry a sample from your home to your biology laboratory to demonstrate the presence of microbes under a microscope, which sample would you carry and why?
Name any five hybrid varieties of crop plants which have been developed in India.
Find out what the various components of the medium used for propagation of explants in vitro are?
What is the major advantage of producing plants by micropropagation?
Which part of the plant is best suited for making virus-free plants and why?
Explain what is meant by biofortification.
Briefly describe various steps involved in plant breeding.
Discuss the role of fishery in enhancement of food production.
What is apiculture? How is it important in our lives?
Name the methods employed in animal breeding. According to you which one of the methods is best? Why
Name the methods employed in animal breeding. According to you which one of the methods is best? Why
What is meant by the term ‘breed’? What are the objectives of animal breeding?
If your family owned a dairy farm, what measures would you undertake to improve the quality and quantity of milk production?
Please Explain in brief the role of animal husbandry in human welfare.
Fraction of total volume occupied by atoms in a simple cubic cell is
A solid is made of two elements P&Q. Atoms P are in ccp arrangement and atoms Q occupy all the octahedral voids and half of the tetrahedral voids, then the simplest formula of the compound is
In fluorite structure (CaF2)