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A 2 V battery is connected across AB as shown in the figure. The value of the current supplied by the battery when in first case battery's positive terminal is connected to A and in second case when positive terminal of battery is connected to B will respectively be:
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In the following reaction:
$$A + 2B + 3C \rightleftharpoons AB_2C_3$$
6.0 g of A, $$6.0 \times 10^{23}$$ atoms of B and 0.036 mol of C reacted and formed 4.8 g of compound $$AB_2C_3$$. If the atomic mass of A and C are 60 and 80 amu, respectively. What is the atomic mass of B in amu? (Avogadro number = $$6 \times 10^{23}$$)
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An element X shows +3, oxidation state in its compounds. Out of the four compounds given below, choose the incorrect formula for the element X.
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At temperature T, the average kinetic energy of any particle is $$\frac{3}{2}kT$$. The de Broglie wavelength follows the order:
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Molecule AB has a bond length of 1.617 $$\mathring{A}$$ and a dipole moment of 0.38 D. The fractional charge on each atom (absolute magnitude) is: $$(e_0 = 4.802 \times 10^{-10}$$ esu$$)$$
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Which compound exhibits maximum dipole moment among the following?
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When does a gas deviate the most from its ideal behavior?
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The increase of pressure on ice $$\rightleftharpoons$$ water system at constant temperature will lead to:
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Which physical property of di-hydrogen is wrong?
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Which of the alkaline earth metal halides given below is essentially covalent in nature?
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The number of structural isomers for $$C_6H_{14}$$ is:
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Match the organic compounds in column - I with the Lassaigne's test result in column - II appropriately:
Column - I Column - II
A. Aniline i. Red colour with FeCl$$_3$$
B. Benzene sulfonic acid ii. Violet color with sodium nitroprusside
C. Thiourea iii. Blue color with acidic solution of FeSO$$_4$$
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Which of the following pairs of compounds are positional isomers?
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Addition of phosphate fertilizers to water bodies causes:
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Determination of the molar mass of acetic acid in benzene using freezing point depression is affected by:
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At 298 K, the standard reduction potentials are 1.51 V for $$MnO_4^- | Mn^{2+}$$, 1.36 V for $$Cl_2|Cl^-$$, 1.07 V for $$Br_2|Br^-$$, 0.54 V for $$I_2|I^-$$. At pH = 3, permanganate is expected to oxidize: $$\left(\frac{RT}{F} = 0.059\right)$$
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$$A + 2B \rightarrow C$$, the rate equation for the reaction is given as Rate = k[A][B]. If the concentration of A is kept the same but that of B is doubled what will happen to the rate itself?
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For the equilibrium, $$A(g) \rightleftharpoons B(g)$$, $$\Delta H$$ is $$-40$$ kJ/mol. If the ratio of the activation energies of the forward $$(E_f)$$ and reverse $$(E_b)$$ reactions is $$\frac{2}{3}$$ then:
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Under ambient conditions, which among the following surfactants will form micelles in aqueous solution at lowest molar concentration?
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Calamine is an ore of:
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Chlorine water on standing loses its color and forms:
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Which of the following compounds has a P - P Bond?
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Which of the following statements is/are false?
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Which of the following complex ions has electrons that are symmetrically filled in both $$t_{2g}$$ and $$e_g$$ orbitals?
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When concentrated HCl is added to aqueous solution of $$CoCl_2$$, its colour changes from reddish pink to deep blue. Which complex ion gives blue colour in reaction?
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What is the major product expected from the following reaction?
Where D is an isotope of hydrogen.
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In the reaction sequence $$2CH_3CHO \xrightarrow{OH^-} A \xrightarrow{\Delta} B$$; the product B is:
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Which one of the following structures represents the neoprene polymer?
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Which artificial sweetener contains chlorine?
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Accumulation of which of the following molecules in the muscles occurs as a result of vigorous exercise?
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