List of top Chemistry Questions

Which of the following are homopolymers?

In the below reaction, geometry of BCl3, X respectively are \(\text{BC}_{3} + \text{NH}_{3} \rightarrow X\)

Given below are two statements: 
Assertion (A): Hydrolysis of DNA does not form equal numbers of adenine (A) and thymine (T), or guanine (G) and cytosine (C). 
Reason (R): In DNA, adenine forms hydrogen bonds with thymine and cytosine forms hydrogen bonds with guanine. 
The correct answer is:

What are ‘X’ and ‘Y’ in the following reactions?
Acetal $\xrightarrow{X}$ CH$_3$COCH$_3$ $\xrightarrow{Y}$ Oxime
In nucleoside, the base is attached to which position of the sugar molecule?
When 'X' g of graphite is completely burnt in a bomb calorimeter in excess of \( O_2 \) at 298 K and 1 atm pressure as given in the equation $$ \text{C(graphite)} + O_2(g) \rightarrow CO_2(g) $$ The temperature of calorimeter raised from 298 K to 302 K. If the heat capacity of the calorimeter and molar enthalpy change for the reaction at 1 atm and 298 K are 20.7 kJ K\(^{-1} \) and -248.4 kJ mol\(^{-1} \), 'X' in g is
Molar conductivities at infinite dilution \( \Lambda_m^\circ \) for \( Ba(OH)_2 \), \( BaCl_2 \) and \( NH_4Cl \) are 457.6, 240.6 and 213.0 \( S cm^2 mol^{-1} \) respectively. The \( \Lambda_m^\circ \) for ammonium hydroxide (in \( S cm^2 mol^{-1} \)) is
The correct order of C − O bond length in CO, CO2−3, CO2 is
Hydrolysis products of isobutyl isonitrile are:
Which of the following reactions are endothermic and spontaneous?
Select the correct order of radii of the given ions:
Which of the following contains 10 electrons, 11 protons, and 12 neutrons?
At T(K), the electrode potential of A$^{2+}$(X M)$|$A(s) is –0.2285 V. Given $E^\circ_{A^{2+}/A} = -0.14$ V, the value of X in mol L$^{-1}$ is:
Which of the following polymer is used in the preparation of gaskets?
Which of the following oxides is highly basic?
The geometries of mononuclear carbonyl complexes of Cr, Fe, Ni are respectively
In which of the following amino acids -OH group is present?
What are 'X' and 'Y' in the following reaction?
conc.naoh

Which of the following is correct with respect to the graph given?
[R] = Conntration at time 't' 
[R]$_0$ = Initial conntration 

In the extraction of copper from copper glance, blister copper is formed by the evolution of a gas X. The shape of molecule of X is
Given below are two statements Assertion (A): Conductivity of an electrolyte decreases on dilution Reason (R): On dilution number of ions per unit volume increases The correct answer is
Consider the following statements for a gold sol: I) It is macromolecular colloid II) It is a lyophobic sol III) It is a negatively charged sol IV) It is a multimolecular colloid V) It is an associated colloid The correct statements are:
Ethane on heating with a regulated supply of air at high pressure in presence of manganese acetate forms 'Q'. 'Q' is
A flask with open mouth containing air was heated from 27°C to 477°C. Some air was expelled. What is the fraction of air expelled out?

For the reaction A + B → C, the following data were obtained:

The order of reaction with respect to A and B are respectively