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Tincture of iodine is ____________.
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Which one has the lowest boiling point?
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Fluorine differs from the rest of the halogens in some of its properties. This is due to ____________.
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The set with the correct order of acidity is:
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The nucleic acid base having two possible binding sites is ____________.
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Fe3O4 (magnetite) is an example of ___________.
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Which is the strongest acid in the following:
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Which of the following pairs of ions are isoelectronic and isostructural?
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Bond dissociation enthalpy of E–H (E = element) bonds is given below. Which of the compounds will act as the strongest reducing agent?
| Compound | \[\ce{NH3}\] | \[\ce{PH3}\] | \[\ce{AsH3}\] | \[\ce{SbH3}\] |
| Δdiss (E – H)/kJ mol–1 | 389 | 322 | 297 | 255 |
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In which of the following cases blood cells will shrink ______.
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Which of the following arrangements shows schematic alignment of magnetic moments of antiferromagnetic substances?
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Which of the following statements is not true?
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A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field becuase ______.
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The value of magnetic moment is zero in the case of antiferromagnetic substances because the domains:
(i) get oriented in the direction of the applied magnetic field.
(ii) get oriented opposite to the direction of the applied magnetic field.
(iii) are oppositely oriented with respect to each other without the application of magnetic field.
(iv) cancel out each other’s magnetic moment.
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Which of the following statements are correct?
(i) Ferrimagnetic substances lose ferrimagnetism on heating and become paramagnetic.
(ii) Ferrimagnetic substances do not lose ferrimagnetism on heating and remain ferrimagnetic.
(iii) Antiferromagnetic substances have domain structures similar to ferromagnetic substances and their magnetic moments are not cancelled by each other.
(iv) In ferromagnetic substances all the domains get oriented in the direction of magnetic field and remain as such even after removing magnetic field.
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How does a delta form at the meeting place of sea and river water?
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In solid state \[\ce{PCl5}\] is a ______.
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Reduction potentials of some ions are given below. Arrange them in decreasing order of oxidising power.
| Ion | \[\ce{CIO^{-}_{4}}\] | \[\ce{IO^{-}_{4}}\] | \[\ce{BrO^{-}_{4}}\] |
| Reduction potential EΘ/V |
EΘ = 1.19 V | EΘ = 1.65V | EΘ = 1.74 V |
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Which of the following is isoelectronic pair?
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Which of the following statements are true?
(i) Only type of interactions between particles of noble gases are due to weak dispersion forces.
(ii) Ionisation enthalpy of molecular oxygen is very close to that of xenon.
(iii) Hydrolysis of XeF6 is a redox reaction.
(iv) Xenon fluorides are not reactive.
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