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Chemical formula of powder used in carom board is?
What is the chemical name of SANDUR?
Which one of the following is an acid?
Which of the following transition metals in its ground state have unpaired electrons in an s-orbital?
NUMS 2015
Chemistry
d and f Block Elements
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The total number of transition elements is:
NUMS 2019 Reconduct
Chemistry
d and f Block Elements
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Zinc reacts with dil. H2SO4 to give H2. It also reacts with conc. H2SO4 to form SO2. In these reactions.
NTS 2014
Chemistry
d and f Block Elements
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Electronic configuration of chromium (Proton number 24) is:
PMC 2020
Chemistry
d and f Block Elements
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Boric acid is used in
Aluminium is a
Which of the following elements of Group 3 is non-metallic in character?
Impurities of lead in silver are removed by:
NUMS 2016
Chemistry
d and f Block Elements
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Aluminium is in Nature
Which of the following has the maximum number of unpaired d electrons?
NTS 2016 DUHS & JSMU
Chemistry
d and f Block Elements
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Scandium, Sc, is the first of the 3d blocks of elements in the Periodic table.
Which properties of Sc approve the above fact?
NUMS 2019 Cancelled
Chemistry
d and f Block Elements
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The octahedral geometry of the complex [Co(NH3)6]2+ has hybridization:
NUMS 2019 Reconduct
Chemistry
d and f Block Elements
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The transition element which does not show variable valency is:
PMC 2020
Chemistry
d and f Block Elements
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Identify from the following the example in which the complex is an anion:
NTS 2016 SMBBMC
Chemistry
d and f Block Elements
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Valence electronic configuration Cu+2 is (29Cu)
NUMS 2019 Reconduct
Chemistry
d and f Block Elements
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Prussian blue is:
NUMS 2014
Chemistry
d and f Block Elements
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) Aluminium is agent?
Transition Elements usually show:
NUMS 2015
Chemistry
d and f Block Elements
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Chromium dissolves in dilute H2SO4 for [Cr(H2O)6]2. The colour of the ion is:
NUMS 2016
Chemistry
d and f Block Elements
Elimination Tool:
Borax bead test is used to separate:
Aluminum reacts with H2SO4 to produce
Ability of carbon to form long chains and rings is known as?
Burning of amorphous Boron in air forms
) Which one of the following is metalloid?
Which one is not the type of Boric Acid?
Which of the following is not an interstitial compound?
NTS 2014
Chemistry
d and f Block Elements
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Variable valency is generally exhibited by:
NUMS 2014
Chemistry
d and f Block Elements
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Which one of the following ions exhibits d-d transition and paramagnetism as well?
NTS 2014
Chemistry
d and f Block Elements
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Solubility of Borax decahydrate at 100C is
Aluminum silicate is used In:
Which element among the following forms a protective oxide coating on exposure to air?
Which of the following does not act as ligand in the formation of complexes?
NUMS 2019 Reconduct
Chemistry
d and f Block Elements
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Which element of group 4A shows inert pair effect?
The oxidation states of Boron are:
Which of the following transition metals has the highest variable oxidation state?
NUMS 2019 Cancelled
Chemistry
d and f Block Elements
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Which of the following is used to make container for nitric acid?
The color of transition metal complexes is due to transition of electrons between:
NUMS 2019 Reconduct
Chemistry
d and f Block Elements
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The formula of cryolite is
silicon can be obtained from which one of the following compounds
A six-coordinate complex of formula CrCl3.6H2O has green color. A 0.1 M solution of the complex, when treated with an excess of AgCl, gave 28.7 g of a white precipitate. The formula of the complex would be___________.
NUMS 2019 Cancelled
Chemistry
d and f Block Elements
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Orthoboric acid can NOT be obtained by which of the following?
In 3rd series of transition elements, paramagnetic behaviour is maximum for Mn +2 and :
PMC 2020
Chemistry
d and f Block Elements
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If a person is injected by shot of a gun and all the bullets are not removed from his body, it may cause poisoning by:
NUMS 2017
Chemistry
d and f Block Elements
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EDTA ion is a ________ ligand.
NTS 2012
Chemistry
d and f Block Elements
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Which of the following forms a layer of oxide on its exposure to moisture?
IUPAC name for [Pt Cl Br (NO2) (NH3)3] Cl is:
NUMS 2015
Chemistry
d and f Block Elements
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