Chemistryp-block-elements2019easy
The correct order of catenation is :
Chemistryp-block-elements2019easy
The correct statements among I to III regarding
group 13 element oxides are,
(I) Boron trioxide is acidic.
(II) Oxides of aluminium and gallium are
amphoteric.
(III) Oxides of indium and thalliumare basic.
Chemistryp-block-elements2019easy
The amorphous form of silica is :
Chemistryp-block-elements2019easy
C60 an allotrope of carbon contains :
Chemistryp-block-elements2019easy
Diborane (B2H6) reacts with O2 and H2O independently, then products formed are :
Chemistryp-block-elements2019easy
Chlorine on reaction with hot and concentrated sodium hydroxide give :
Chemistryp-block-elements2019easy
The element that does NOT show catenation is :
Chemistryp-block-elements2019easy
The element that shows greater ability to form p-p multiple bonds, is :
Chemistryp-block-elements2019medium
Correct statements among a to d regarding silicones are :
(a) They are polymers with hydrophobic character.
(b) They are biocompatible.
(c) In general, they have high thermal stability and low dielectric strength.
(d) Usually, they are resistant to oxidation and used as greases.
Chemistryp-block-elements2019easy
The one that is extensively used as a piezoelectric material is :
Chemistryp-block-elements2019easy
Good reducing nature of H3PO2 is attributed to the presence of :
Chemistryp-block-elements2019easy
Among the following reactions of hydrogen with halogens, the one that requires a catalyst is :
Chemistryp-block-elements2019easy
The chloride that CANNOT get hydrolysed is :
Chemistryp-block-elements2019easy
The relative stability of +1 oxidation state of group 13 elements follows the order :
Chemistryp-block-elements2019easy
The hydride that is NOT electron deficient :
Chemistryp-block-elements2019easy
Iodine reacts with concentrated HNO3 to yield Y along with other products. The oxidation state of iodine in Y, is :
Chemistryp-block-elements2019easy
The number of 2-centre-2-electron and 3-centre -2-electron bonds in B2H6, respectively, are :
Chemistrychemistry-in-everyday-life2019easy
The correct match between item (I) and item (II) is :
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.tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}
.tg .tg-wrg0{font-size:22px;text-align:center;vertical-align:top}
.tg .tg-wv9z{font-size:22px;text-align:center}
.tg .tg-de48{font-weight:bold;font-size:22px;text-align:center}
Item-I
Item-II
(A)
Norethindrone
(P)
Anti-biotic
(B)
Ofloxacin
(Q)
Anti-fertility
(C)
Equanil
(R)
Hypertension
(S)
Analgesics
Chemistrychemistry-in-everyday-life2019easy
The correct match between Item I and Item II is :
.tg {border-collapse:collapse;border-spacing:0;border:none;}
.tg td{font-family:Arial, sans-serif;font-size:14px;padding:10px 5px;border-style:solid;border-width:0px;overflow:hidden;word-break:normal;}
.tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:10px 5px;border-style:solid;border-width:0px;overflow:hidden;word-break:normal;}
.tg .tg-x1hj{font-size:22px;border-color:inherit;text-align:left;vertical-align:top}
.tg .tg-0xlv{font-weight:bold;font-size:22px;border-color:inherit;text-align:center}
.tg .tg-c4o0{font-size:22px;border-color:inherit;text-align:left}
Item I
Item II
(A)
Allosteric effect
(P)
Molecule binding to the active site of enzyme
(B)
Competitive inhibitor
(Q)
Molecule crucial for communication in the body
(C)
Receptor
(R)
Molecule binding to a site other than the active site of
enzyme
(D)
Poison
(S)
Molecule binding to the enzyme covalently
Chemistrychemistry-in-everyday-life2019easy
Noradrenaline is a/an