Name some traditional Indian foods made of wheat, rice and Bengal gram (or their products) which involve use of microbes.

(i) Name a compound of (a) transition metal which is used in the manufacture of sulphuric acid. (b) transition metal that is used in Haber's process for the manufacture of ammonia. (c ) transition metal that have light sensitive properties and act as valuable source in photographic industry. (ii) Write the equations which are involved in the oxidation of hydrogen sulphide to sulphur by potassium permanganate solution.

Which cell is generally used in hearing aids ? Name the material of the anode, cathode and electrolyte. Write the reactions involved.

In which food would you find lactic acid bacteria ? Menton some of their useful applications.

Which of the following is / are correct about the process of RNA interference ? (i) This is used to prevent the infestaiton of protozoans. (ii) it takes place in some eukaryotic and all prokaryotic organisms as a method of cellular defense. (iii) The method involves silencing of a specific mRNA due to a complementary dsRNA molecule. (iv) It is novel strategy to produce pest resistant plant

Name any two species of fungus, which are used in the production of the antibiotics.

Which of the following statements regarding the disease typhoid is/are correct ? (i) Salmonella typhi are the pathogenic bacteria which enter human intestine through contaminated food and water migrate to other organs through blood. (ii) Sustained high fever (39^(@)C " to " 40^(@)C) , weakness, stomach pain, constipation, headache and loss of appetite are some common symptons of typhoid. (iii) Widal test is used for diagnosis of typhoid fever. (iv) The patient of this disease is not required to be treated with antibiotics.

Read the following statements and select the correct option. Statement 1 : Zoological parks are the places where wild animals are kept in protected environments under human care and which enable us to learn about their food habits and behaviour. Statement 2 : Adequate arrangements for the treatment, medication, regular check up and pathological investigations are absolutely necessary to eb made for the healt, care and upkeep of the animals.

Name the laws which are used to obtain the condition of balanced in Wheat stone bridge.