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1
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
When XO2 is fused with an alkali metal hydroxide in presence of an oxidizing agent such as KNO3 ; a dark green product is formed which disproportioates in acidic solution to afforda dark purple solution. X is :
A
Ti
B
V
C
Cr
D
Mn
2
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
At 320 K, a gas A2 is 20% dissociated to A(g). The standard free energy change at 320 K and 1 atm in J mol-1 is approximately : (R = 8.314 JK-1 mol-1; ln2 = 0.693; ln 3 = 1.098)
A
4763
B
2068
C
1844
D
4281
3
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Among the following, the incorrect statement is :
A
Maltose and lactose has 1, 4 - glycosidic linkage.
B
Sucrose and amylose has 1, 2 - glycosidic linkage
C
Cellulose and amylose has 1, 4 - glycosidic linkage.
D
Lactose contains $$\beta $$-D-galactose and $$\beta $$-D-glucose.
4
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following complexes will shows geometrical isomerism ?
A
aquachlorobis (ethylenediamine) cobalt (II) chloride
B
pentaaquachlorohromium (III) chloride
C
potassium amminetrichloropltinate (II)
D
potassium tris(oxalato) chromate (III)

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