Recent questions in Chemistry

Which one of the following does not exhibit the phenomenon of mutarotation?

asked Mar 31, 2014 by thanvigandhi_1

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The total number of basic groups in the following form of lysine is

asked Mar 31, 2014 by thanvigandhi_1

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Cellulose upon acetylation with excess acetic anhydride/ $H_2SO_4$ (catalytic) gives cellulose triacetate whose structure is

asked Mar 31, 2014 by thanvigandhi_1

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The correct statement about the following disaccharide is

asked Mar 31, 2014 by thanvigandhi_1

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Biuret test is not given by

asked Mar 31, 2014 by thanvigandhi_1

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The 2 functional groups present in typical carbohydrate are

asked Mar 31, 2014 by thanvigandhi_1

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Which of the following hormones contain iodine?

asked Mar 31, 2014 by thanvigandhi_1

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The segment of DNA which acts as the instrumental manual for the synthesis of protein is

asked Mar 31, 2014 by thanvigandhi_1

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Which of the following vitamin is oil soluble?

asked Mar 31, 2014 by thanvigandhi_1

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The number of disulphide linkages present in insulin are

asked Mar 31, 2014 by thanvigandhi_1

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$ \alpha$-D (+)-glucose and $\beta$-D(+)-glucose are

asked Mar 31, 2014 by thanvigandhi_1

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Which of the following is an amine hormone?

asked Mar 31, 2014 by thanvigandhi_1

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Which of the following has the largest number of atoms?

asked Mar 31, 2014 by meena.p

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In DNA, a complimentary bases are

asked Mar 31, 2014 by thanvigandhi_1

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Substance is found to contain $7 \%$ nitrogen, The minimum molecular weight of it is

asked Mar 31, 2014 by meena.p

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Two samples of lead oxide were separately reduced to metallic lead by heating in a current of hydrogen. The weight of lead from one oxide was half the weight of lead obtained from the other oxide. The data illustrates

asked Mar 31, 2014 by meena.p

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The mass of a piece of paper is $0.02\;g$ and the mass of a solid substance along with the same piece of paper is $20.036\;g$. If the volume of the solid is $2.16\;cm^3$ its density to the proper number of significant digits will be

asked Mar 31, 2014 by meena.p

1 answer

Two Containers P and Q of equal volume (1 litre each) contain 6g of $O_2$ and $SO_2$ respectively at $300\;k$ and 1 atmosphere then,

asked Mar 31, 2014 by meena.p

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When a sample of human blood is diluted $200$ times its initial volume and microscopically examined in a layer $0.10\;mm$ thick , an average of $30\;RBC$ are found in $100 \times 100 $ micrometer square. The number of RBC in $1 \;mm^3$ of undiluted blood is

asked Mar 31, 2014 by meena.p

1 answer

What quantity of limestone $(CaCO_3)$ on heating will give $56\;kg$ of $CaO$?

asked Mar 31, 2014 by meena.p

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The Loschmidt number is the number of

asked Mar 31, 2014 by meena.p

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If $N_A$ is Avogadro's number then number of valence electrons in $4.2\;g$ of nitride ions $(N^{3-})$ is

asked Mar 31, 2014 by meena.p

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A spherical balloon of 21cm diameter is to be filled up with $H_2$ at NTP from a cylinder containing the gas at 20 atm at $27^{\large\circ}C$. The cylinder can hold 2.82 litre of water at NTP . Calculate the number of balloons that can be filled up.

asked Mar 31, 2014 by sharmaaparna1

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A gas occupies 300mL at $27^{\large\circ}C$ and 730 mm pressure . What would be its volume at STP?

asked Mar 31, 2014 by sharmaaparna1

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A vessel has nitrogen gas and water vapour at a total pressure of 1 atm . The partial pressure of water vapour is 0.3 atm. When the contents of this vessel are transformed to another vessel having one third of the capacity of original vessel , completely at the same temperature , the total pressure of the system in the new vessel is:

asked Mar 31, 2014 by sharmaaparna1

1 answer