At 300 K and 1 atmospheric pressure, 10 mL of a hydrocarbon required 55 mL of O$$_2$$ for complete combustion, and 40 mL of CO$$_2$$ is formed. The formula of the hydrocarbon is:
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At 300 K and 1 atmospheric pressure, 10 mL of a hydrocarbon required 55 mL of O$$_2$$ for complete combustion, and 40 mL of CO$$_2$$ is formed. The formula of the hydrocarbon is:
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The graph between $$|\psi|^2$$ and r (radical distance) is shown below. This represents:
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The isoelectronic set of ions is:
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During the change of O$$_2$$ to O$$_2^-$$, the incoming electron goes to the orbital:
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Consider the following table:
Gas a/(kPa dm$$^6$$ mol$$^{-1}$$) b/(dm$$^3$$ mol$$^{-1}$$)
A 642.32 0.05196
B 155.21 0.04136
C 431.91 0.05196
D 155.21 0.4382
a and b are van der Waals constants. The correct statement about the gases is:
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A process will be spontaneous at all temperatures if:
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Consider the following statements
(a) The pH of a mixture containing 400 mL of 0.1 M H$$_2$$SO$$_4$$ and 400 mL of 0.1 M NaOH will be approximately 1.3.
(b) Ionic product of water is temperature dependent.
(c) A monobasic acid with K$$_a$$ = 10$$^{-5}$$ has a pH = 5. The degree of dissociation of this acid is 50%.
(d) The Le Chatelier's principle is not applicable to common-ion effect.
The correct statements are:
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The synonym for water gas when used in the production of methanol is:
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The alloy used in the construction of aircrafts is:
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The correct order of catenation is:
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The principle of column chromatography is:
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The increasing order of the reactivity of the following compounds towards electrophilic aromatic substitution reactions is:
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The regions of the atmosphere, where clouds form and where we live, respectively, are:
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At room temperature, a dilute solution of urea is prepared by dissolving 0.60 g of urea in 360 g of water. If the vapour pressure of pure water at this temperature is 35 mm Hg, lowering of vapour pressure will be:
(molar mass of urea = 60 g mol$$^{-1}$$)
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Consider the statements S1 and S2:
S1: Conductivity always increases with decreases in the concentration of electrolyte.
S2: Molar conductivity always increases with decreases in the concentration of electrolyte.
The correct option among the following
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A bacterial infection in an internal wound grows as N'(t) = N$$_0$$exp(t), where the time t is in hours. A dose of antibiotic, taken orally, needs 1 hour to reach the wound. Once it reaches there, the bacterial population goes down as $$\frac{dN}{dt} = -5N^2$$. What will be the plot of $$\frac{N_0}{N}$$ vs t after 1 hour?
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A gas undergoes physical adsorption on a surface and follows the given Freundlich adsorption isotherm equation
$$\frac{x}{m} = kp^{0.5}$$
Adsorption of the gas increases with:
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Match the refining methods (Column I) with metals (Column II).
Column I Column II
(Refining methods) (Metals)
(I) Liquation (a) Zr
(II) Zone Refining (b) Ni
(III) Mond Process (c) Sn
(IV) Van Arkel Method (d) Ga
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The oxoacid of sulphur that does not contain bond between sulphur atom is:
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Consider the hydrated ions of Ti$$^{2+}$$, V$$^{2+}$$, Ti$$^{3+}$$ and Sc$$^{3+}$$. The correct order of their spin-only magnetic moments is:
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The species that can have a trans-isomer is:
(en = ethane-1, 2-diamine, ox = oxalate)
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Three complexes,
[CoCl(NH$$_3$$)$$_5$$]$$^{2+}$$(I), [Co(NH$$_3$$)$$_5$$H$$_2$$O]$$^{3+}$$(II) and [Co(NH$$_3$$)$$_6$$]$$^{3+}$$(III)
absorb light in the visible region. The correct order of the wavelength of light absorbed by them is:
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Increasing rate of S$$_N$$1 reaction in the following compounds is:
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The major product of the following reaction is:
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The major product of the following reaction is:
Major products of the following reaction are:
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The major product of the following reaction is:
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Ethylamine (C$$_2$$H$$_5$$NH$$_2$$) can be obtained from N-ethylphthalimide on treatment with:
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Which of the following is a condensation polymer?
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Amylopectin is composed of:
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