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In addition of DBr to 1,3-cyclohexadiene,2 products are obtained.What is best explaination for formation of B??? *Image* ...

i understand phy very well...... but is not able 2 score well inspite of prctsng a lot. What 2 do?? plz help.. ...

well i am weak in chemistry...(actually i am weak in all subjects )..anyway here is a doubt which many of u may think rubbish.But pls help this poor fellow and solve this rubbish doubt. HOW DO I DETERMINE WHETHER A GIVEN BASE ...

A drop of water sticks to a glass surface due to cohesive forces between glass and water molecules. But why does an air bubble stick to a glass surface under water? ...

this is an extension of a traditional problem.... here is the setup with some initial compression in the spring such that when string is burned lower block just leaves the ground. (a string is tied b/w two blocks) Here u have ...

An ornament for the courtyard at the world's fair is made up of four spheres each being identical and weighing 2 6 N. The spheres are arranged such that the three of them forms the base and the fourth one lying on their t ...

The lower end of the capillary tube is immersed in mercury. The level of mercury in the tube is found to be 2 cm below the outer level. iF the same tube is immersed in water then the water rise in the capillary is? ...

Convert ETHANAL to BUTANAL 1,3 DIAL do describe the structure of d same ...

a stock room supervisor measured the contents of a partially filled 25 gallon acetone drum on a day when the temperature was 18°c and atmospheric pressure was 780mm Hg,and found that 15.4 gallons of the solvent remained. aft ...

Ques) A coil of current crrying Nichrome wire is immersed in aliquid. When the potetial difference across the coil is 12 V and the current through the coil is 5.2 A., the liquidm evaporated at the steady rate of 21mg/sec. Cal ...

1)AB is a chord of the circle x2+y2=25/2.P is a point such that PA=4 and PB=3.If AB=5,then the distance of P from the origin is _____ ...

Water level in tub is 1m.If a capillary tube of very small radius and length 4m is dipped into the water,it rises in the tube up to 2m.If another capillary tube of same radius but 2m length is dipped into water, will the wate ...

aa dekhe jara kisme kitna hai inorganic dum .... *Image* To make things easier here are the options ... (a) q,r q,s s,p r,p (b) s r q p (c) q r p s (d) r p q s ...

CHOOSE THE CORECT STATEMENT(S) A)The red blood colour obtained by adding KCNS to a ferric salt fades out when NAF is gradually added to it B) When NaOH is added to a cupric salt solution, pale bluish geen Cu(OH)2 is precipita ...

Vapor pressure of most substances increases with temperature Which way of plotting these data is expected to give a straight line? a) 1/P v/s T b) P v/s 1/T c) ln P v/s T d) ln P v/s 1/T ...

I am giving JEE 2010. I do not where to start the organic chemistry from. I do not know anything in organic. PLs help me and tell me how should i start and go about studying it ...

Q1. What is the difference between non-aromatic and antiaromatic? .. wud u call cyclooctratetraene as non-aromatic or anti-aromatic? Q2. Why is pyrene aromatic even though it violates Huckel's rule? *Image* Q3. Show the dipol ...

An ellipsoid is given by x2/a2+y2/b2+z2/c2=1 find the volume of it ...

Solve this integral \int_{0}^{infinity}{\frac{tan^{-1}(\pi x)-tan^{-1}x}{x}}dx ...

Find the domain of the following:- (a) F(x) = sin -1{ (2-3[x] ) / 4 } (b) F(x) = sin |x| + sin -1 (tanx) + sin (sin -1 x) (c) F(x) = (x 2 - |x| - 2) 1/2 ...

1) A potentiometer wire of length 100 cm has a resistance of 10 ohm. It is connected in series with a resistance and an accumulator of emf 2V and of negligible reistance.A source of emf 10 mV is balanced against a length of 4 ...

why aq. KOH substitute by SN2?????? ...

In case of beats,intensity of sound at some positions in space remains maximum and at others remains minimum Give appropriate reason also ...

Why closed pipe can't be used as musical instrument ? ...

Lim (x→∞) 2t-3t/xn where t= xn/ex and n ε N = a.ln(2/3) b.0 c.n ln(2/3) d. not defined ...

Q.Two uniform rods A and B of lenghts 5m and 3m are placed end to end.If their linear densities are 3kg/m and 2kg/m , the position of their center of mass from their interface is 1.19/14 m on the side of heavier rod 2.8/7 m o ...

compare d rate of decarboxylation RC(CI)COOH N RC(F)COOH ...

c6h5-ch2-chF-CH3 ON DOING E1CB WILL FORM SAYTZEFF ALKENE OR HOFFMAN ...

there is an amoeba....in every minute it has four options : (0) it dies (1) it remains as it is (2) it doubles (3) it triples find the probability that after 2 minutes the amoeba dies ....(.i.e. if it doubles or triples all o ...

Lucas test is used to distinguish between primary, secondary and tertiary alcohols. Lucas test progress through the formation of carbocation in case of secondary and tertiary alcohols. and there is always a possibility of rea ...