Chemistry-
General
Easy

Question

Salicin (structure given below) is a glycoside, found in the bark of willow tree, used in relieving pain. Observe the following reaction of salicin

The correct statement (s) is (are) :

  1. P is D- glucose    
  2. Q is 2-hydroxybenzylalcohol    
  3. Q can be converted to a modern analgesic (pain killer), aspirin    
  4. The above reaction occurs through a carbocation    

The correct answer is: Q is 2-hydroxybenzylalcohol

Related Questions to study

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Which one of the following is the Young’s modules (in N divided by m to the power of 2 end exponent right parenthesis for the wire having the stress-strain curve shown in the figure

Young’s modulus is defined only in elastic region and
Y equals fraction numerator S t r e s s over denominator S t r a i n end fraction equals fraction numerator 8 cross times 10 to the power of 7 end exponent over denominator 4 cross times 10 to the power of negative 4 end exponent end fraction equals 2 cross times 10 to the power of 11 end exponent N divided by m to the power of 2 end exponent

Which one of the following is the Young’s modules (in N divided by m to the power of 2 end exponent right parenthesis for the wire having the stress-strain curve shown in the figure

physics-General
Young’s modulus is defined only in elastic region and
Y equals fraction numerator S t r e s s over denominator S t r a i n end fraction equals fraction numerator 8 cross times 10 to the power of 7 end exponent over denominator 4 cross times 10 to the power of negative 4 end exponent end fraction equals 2 cross times 10 to the power of 11 end exponent N divided by m to the power of 2 end exponent
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The diagram shows the change x in the length of a thin uniform wire caused by the application of stress F at two different temperatures T subscript 1 end subscriptand T subscript 2 end subscript. The variation shown suggest that

Elasticity of wire decreases at high temperature i. e. at higher temperature slope of graph will be less
So we can say that T subscript 1 end subscript greater than T subscript 2 end subscript

The diagram shows the change x in the length of a thin uniform wire caused by the application of stress F at two different temperatures T subscript 1 end subscriptand T subscript 2 end subscript. The variation shown suggest that

physics-General
Elasticity of wire decreases at high temperature i. e. at higher temperature slope of graph will be less
So we can say that T subscript 1 end subscript greater than T subscript 2 end subscript
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IHf ofICl(g),Cl(g),andI(g)is17.57,121.34and 106.96Jmol1respectively.Thenbonddissociation energyofIClbondis-

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Calculateenthalpychangeofthefollowingreaction H2C=CH2(g)+H2(g)→H3CCH3(g) ThebondenergiesofC–H,C–C,C=C,H–Hare414, 347,615and435KJmol1respectively-

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HeatevolvedinthereactionH2+Cl2 →2HClis 182KJ.BondenergiesofHH anCl–Clare430 and242KJ/morespectively.ThHCbond energy is-

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Among thfollowinfowhich reactioheat of reactiorepresents bond energof HCl

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The range of a galvanometer of resistance G ohm is V  wolt. The resistance required to be connected in series with it in order to convert it into voltmeter of range  n V volt will be........

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physicsGeneral
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A galvanometer with resistance 100Ω  is converted into an ammeter with a resistance of 0.1. The galvanometer shows full scale deflection with current of 100μA. Then what will be the minimum current in the circuit for fall scale deflection of galvanometer?

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physicsGeneral
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A galvanometer of resistance 200Ω  gives full scale deflection for a current of  10 to the power of negative 3 end exponentA. To convert it into an anmeter capable of measuring upto  1A. What resistance should be connected in parallel with it ?

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physicsGeneral
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A moving coil galvanometer has 150 equal divisions, Hs current sensitivity is 10 divisions per milliampere and voltage sensitivity is 2 divisions per millivolt. In order that each divisions reads 1 V . What will be the resistance in ohms needed to be connected in series with the coil?

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A battery of 2 V and internal resistance 1 is used to send a current through a potentiometer wire of length 200 cm and resistance  What is the potential gradieut of the wire?

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physicsGeneral
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A potentiometer wire, which is 4 cm  long is connected to the terminals of a battery of steady voltage A leclanche cell gives a nullpoint at 1 m if the length of the potentiometer wire be increased by 1 m, What is the new new position of the null point?

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physicsGeneral
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physics

In experiment of the potentiometer wire  AB of length 100 cm has a resistance of 10Ω, It is connected in series with a resistance R and a cell of emf 2 volts and of negligible internal resistance.A Source of emf 10mV is balanced against a length of  of 40 cm the poteatio meter wire. What is the value of the external resistance?

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physicsGeneral
General
physics

If the deflection of the galvanometer is  the same direction at both the ends of the potential meter wire, then point out the statement which is definitely not the possible reason for the.

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physicsGeneral
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Physics

In the experiment of potentiometer wire AB is 100 cm long shown in figure When AC=40 cm , no deflection oocurs in the galvanometer. What is the value of  R ?

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