List of practice Questions

Match the following

List - AList - B
A. C4 PhotosynthesisI. Camerarius
B. Plant tissue cultureII. Conrat
C. Genetic nature of RNAIII. Shimakura
D. Sexual reproduction in plantsIV. V.S. Rama Das
Consider the following
Statement-I: Natural rubber becomes soft at low temperature and brittle at high temperature.
Statement-II: Natural rubber has weak van der Waals forces between its polymer chains.
The water soluble vitamin which is not excreted through urine easily is
Identify the artificial sweetener which has highest sweetness value compared to cane sugar
Identify the reaction which occurs in blast furnace at temperature of above 900 K.
Alkaline oxidative fusion of MnO$_2$ gives 'X'. The products formed when 'X' undergoes disproportionation in acid medium are
I) KMnO$_4$
II) MnO$_2$
III) O$_2$
IV) H$_2$O
Identify the complex ion/s with the least spin only magnetic moment (in BM).
I) [Fe(CN)$_6$]$^{3-}$
II) [Co(CN)$_6$]$^{3-}$
III) [Mn(CN)$_6$]$^{4-}$
IV) [Fe(CN)$_6$]$^{4-}$
The number of monochloro derivatives possible for 2,2-Dimethylbutane and 2,3-Dimethylbutane are respectively
Vessel (A) contains 1 mole each of H$_2$ and I$_2$, and vessel (B) contains 2 moles each of H$_2$ and I$_2$. Both vessels are at the same temperature and reach equilibrium for the reaction H$_2$(g) + I$_2$(g) $\rightleftharpoons$ 2HI(g). What is the ratio of the equilibrium constants $K_p$ for vessels A and B?
The conjugate acid and base of ammonia are X and Y, respectively. What are the shapes of X and Y?
For the reactions: NaBH$_4$ + I$_2$ $\rightarrow$ A + NaI + H$_2$, and A + LiH $\rightarrow$ B, what are A and B, respectively? (Reactions are not balanced)
The buffer system that helps in maintaining pH of blood between 7.26 and 7.42 is
The BOD value of clean water is X. The maximum concentration of cadmium recommended in drinking water is Y. X and Y respectively are
The sum of number of antibonding electrons present in O$_2$, O$_2^+$, O$_2^-$ is:
Observe the following molecules: ClF, SF$_4$, CH$_4$, NH$_3$, XeF$_4$, PCl$_5$. The number of molecules in which the central atom has expanded octet is:
One mole of an ideal gas is contained in a 1 L vessel at T(K) with a pressure of p atm. The vessel is split into two equal parts. What are the pressure and volume in each part?
The ratio of the radii of the nuclei of mass numbers 27 and 64 is:
The waves used for line of sight communication and satellite communication are:
If an electron and a proton enter normally into a uniform magnetic field with equal kinetic energies, then:
If the magnetisation of a material is M and the magnetic field in the material is B, then the magnetic intensity is: ($\mu_0$ = permeability of free space)
The energy stored in a coil of inductance 50 mH carrying a current of 2 A is:
A 100 $\Omega$ resistor, a 50 $\mu$F capacitor and an inductor are connected in series to an ac source of frequency 50 Hz. If the circuit is in resonance, then the impedance of the circuit is:
A 10 $\mu$C charge is placed at the vertex A of an equilateral triangle ABC of side 2 m. The work done in taking another charge $(3 + \sqrt{3})$ $\mu$C from the mid point of BC to the mid point of the side AC is:
If a generator of emf 440 V and internal resistance 400 $\Omega$ is connected to an external resistance of 4000 $\Omega$, then the potential difference across the external resistance is:
The nature of the graph between the temperature in Fahrenheit and Celsius values is: