Frequent General Chemistry Questions

does tropyillym carbocation have a dipole moment? i dont think it has , but can resonance nullify it?? ...

i m too weak at Chemistry... actually something because of which i won't be selected in JEE is just this chemistry... especially the organic part... our chem. teacher was going good with chem but got transferred from our FIIT ...

The oxoanions of which element(in its highest oxidation state) shows least tendency to polymerise? A)B B)Cl C)S D)P doubts : on what factors does tendency to polymerize depend on?? ...

the relative humidity of air at any day is 50% and saturation vapuor pressure at 300K is 3.6 kPa. the amount of water vapours pers litre of air at 300K is? ...

which of the following is the non polar species? a- AsO3-1 b- SO3-2 c- ClO3-1 d- NO3-1 guys how to solve it? ...

1) no. of isomeric ethers with chiral carbon in molecular formula C5H12O4 2) *Image* which nitogen in thymine is more acidic . (with explanation) 3) Number of isomers of the formula C4H8O4 ...

For the universe, ΔS is always increasing..right?! if we consider the universe as a system, what will be its surrounding????? moreover is the expansion of universe a adiabatic expansion???? ...

Can anybody tell what is it exactly is a "zwitterion"? Also can any dipolar molecule can be called as zwitterion???? ...

What are the main topics that we must cover in Atomic structure for JEE? This chapter is full of lengthy formulas, which are typical to keep in memory So what sort of topics must be focussed in this chapter? Please suggest... ...

If the velocity of an electron moving in the first Bohr's Orbit of hydrogen has to reduced to 7.27 X 105m,it should be shifted by??? ...

the penetrating power of protons is (a) greater than neutrons (b) lesser than electrons (c) greater than elecrons (d) none of these ...

are binary IMMISCIBLE systems in jee syllabus? ...

Why don't carbenes combine to give ethene whereas two H-C with 3 free e- combine to give H-C≡C-H ? ...

Out of H-H and D-D which is having higher bond enthalpy and why? ...

What is the hybridisation used by Cl in ClO2- a) sp3 b) sp2 c) sp d) NOT!! give full expl!! ...

1)Something that isn't consumed by the reaction (so say A) is dissolved at the same time as something that is consumed by the reaction (B) in a solvent, so that they are in the same phase...what is this reaction an example of ...

1.The boiling point of H2O is much higher than that of H2S.Why? ...

Determine the enthalpy change for the following reaction at 25°C: C3H8(g) + H2(g) → C2H6(g) + CH4(g) Using the Standard Heats Of Combustion that are given below.... *Image* The Standard heat of formation of C3H8(g) is -103 ...

can anyone plz explain me why electron gain enthalpy denoted by reacton: X + e- → X- of all elements is mostly negative in value.This means that X- is more stable than X for most elements .How? plz explain. ...

http://targetiit4pcm.lefora.com/2010/06/25/nsec-question-paper-2004-05/ (some errors occurred in copy-pasting from original goiit article) SO pls see link below OR http://www.goiit.com/posts/list/community-shelf-nsec-question ...

WHICH IS THE ONLY LETTER ABSENT FROM THE MODERN PERIODIC TABLE ? [ Don't even look at the periodic table after you have read the question else it will be cheating ! ] ...

hi can someone please tell me how much do we need to know about these topics mentioned in BITSAT syllabus and where to find them?? -Replication, transcription an protein synthesis, protein code -lipids , hormones , vitamins, ...

1. H2 (g) + Cl2 (g) = 2HCl (g) How many liters of HCl are produced when 11.2 L of chlorine are reacted with excess hydrogen? (One mole of any gas occupies 22.4 L under certain conditions of temperature and pressure. Assume th ...

What is the decreasing order of strength of the bases *Image* and *Image* (a) *Image* (b) *Image* (c) *Image* (d) *Image* ...

A crystalline solid in which X atoms are located at the cube corners of the unit cell, oxygen atoms are located at the cube edges and sodium atoms at the cube centre. The molecular formula of the compound will be (a) NaXO3 (b ...

Here is some info regarding polymers from wikipedia. 1.Natural rubber: Natural rubber is an elastomer (an elastic hydrocarbon polymer) that was originally derived from a milky colloidal suspension, or latex, found in the sap ...

teh rms velocity of hydrogen is √7 times the rms velocity of nitrogen. If T is the temperature of the gas, T(H2) = T(N2) or T(H2) < T(N2) i am getting that both are equal....but the answer given is the second option p.s. ...

Question 1 *Image* MY ANSWER: C ------------------------------------------------------------------------------------------------ Question 2 *Image* ----------------------------------------------------------------------------- ...

A chem problem:A is immiscible in B; B is immiscible in C; please give an example such that A is immiscible in C. My chem teacher said A=water, B=oil, and C=Hg. However, Hg is an outlier! So, are there any other examples? ...

*Image* (acidic/basic;cationic/anionic) *Image* *Image* *Image* *Image* ...