The rate equation for the reaction 2A + B $$\to$$ C is found to be: rate k[A][B]. The correct statement in relation to this reaction is that the

Consider the following nuclear reactions $${}_{92}^{238}M\to {}_Y^{X}N+2{}_2^{4}He$$ $${}_Y^{X}N\to {}_B^{A}L+2{\beta }^{+}$$ The number of neutrons in the element L is

The half – life of a radioisotope is four hours. If the initial mass of the isotope was 200 g, the mass remaining after 24 hours undecayed is

Among the following compounds which can be dehydrated very easily is

Acetyl bromide reacts with excess of CH3MgI followed by treatment with a saturated solution of NH4Cl given

The compound formed in the positive test for nitrogen with the Lassaigne solution of an organic compound is

Beryllium and aluminium exhibit many properties which are similar. But the two elements differ in :

Which one the following statement regarding helium is incorrect?

Which among the following factors is the most important in making fluorine the strongest oxidizing halogen?

Aluminium chloride exists as dimer, Al2Cl6 in solid state as well as in solution of non-polar solvents such as benzene. When dissolved in water, it gives :

The soldiers of Napolean army while at Alps during freezing winter suffered a serious problem as regards to the tin buttons of their uniforms. White metallic tin buttons got converted to grey power. The transformation is related to :

One mole of magnesium nitride on the reaction with an excess of water gives :

Which of the following will have meso-isomer also?

Consider the acidity of the carboxylic acids: (a) PhCOOH (b) o – NO2C6H4COOH (c) p – NO2C6H4COOH (d) m – NO2C6H4COOH Which of the following order is correct?

The $$IUPAC$$ name of the compound is

Which one the following does not have sp2 hybridized carbon?

Rate of the reaction is fastest when $$Z$$ is

Amongst the following compounds, the optically active alkane having lowest molecular mass is

Which of the following is the strongest base ?

Which of the following compound is not chiral?