Two carbon compounds A and B have the molecular formula `C_3H_8` and `C_3H_6` respectively. Which one of the two is most likely to show addition reaction? Justify your answer explain with the help of chemical equaton, how an addition reaction is useful in vegetable ghee industry?

Two solutions A and B have pH 3 and 5 respectively. Which of the two solutions has more hydrogen ion concentration and which one is more acidic? Give reason for your answer.

An organic compound A has the molecular formula C_(8)H_(16)O_(2) . It gets hydrolysed with dilute sulphuric acid and gives a carboxylic acid B and an alcohol C. Oxidation of C with chromic acid also produced B, C on. dehydration reaction gives but -l-ene. Write equations for the reactions involved.

An organic compound ‘A’ having molecular formula C_4H_8 on treatment with dil. H_2SO_4 gives B. B on treatment with conc. HCl and anhydrous ZnCl_2 gives secondary halide C. Write all the reactions and identify A, B and C.

Compound ‘A’ with molecular formula C_4H_9Br is treated with aq. KOH solution. The rate of this reaction depends upon the concentration of the compound ‘A’ only. When another optically active isomer ‘B' of this compound was treated with aq. KOH solution, the rate of reaction was found to be dependent on concentration of compound and KOH both. Out of these two compounds, which one will be converted to the product with inverted configuration.

Which of the following hydrocarbons undergo addition reaction : C_2 H_6 , C_3 H_8 , C_3 H_6, C_2 H_2 and CH_4.

An organic compound on analysis gave the following percentage composition of C= 57.8, H= 3.6 and the rest is oxygen. Vapour density of the compound is 83. Find out the molecular formula of the compound.

Read the given passage and answers following questions : Zeolites are alumino-silicates that are micro-porous in nature. Zeolites have a honeycomb like structure, which makes them shape-selective catalysts. They have an extended 3D-nelwork of silicates in which some silicon atoms are replaced by aluminium atoms, giving them an Al-O-Si framework. The reactions taking place in zeolites are very sensitive to the pores and cavity size of the zeolites. Zeolites are commonly used in the petrochemical industry. A catalytic reaction which depends upon the pore structure of the catalyst and on the size of the reactant and the product molecules is called shape-selective catalysis. For example, catalysis by zeolites is a shape selective catalysis. The pore size present in the zeolites ranges from 260-740 pm. Thus, molecules having a pore size more than this cannot enter the zeolite and undergo the reaction. In which chemical industry Zeolites used ?

The figure VSAQ 29 shows a plot of three curves a,b,c, showing the variation of photocurrent in collector plate potential for three different intensities I_1 , I_2 and I_3 having frequencies v_1 , v_2 and v_3 respectively incident on a photosensitive surface. Point out the two curves for which the incident raidations have the same frequency but different intensities.

These questions consist of two statement each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is a correct explanation of the Assertion. B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. Assertion: Mast cells in the human body release excessive amount of inflammatory chemicals which cause allergic reactions. Reason. Allergens in the environemnt stimulate mast cells in certain individuals.