1
JEE Main 2023 (Online) 1st February Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Given below are two statements:

Statement I : Chlorine can easily combine with oxygen to form oxides; and the product has a tendency to explode.

Statement II : Chemical reactivity of an element can be determined by its reaction with oxygen and halogens.

In the light of the above statements, choose the correct answer from the options given below :

A
Statement I is true but Statement II is false
B
Both the Statements I and II are false
C
Statement I is false but Statement II is true
D
Both the Statements I and II are true
2
JEE Main 2023 (Online) 31st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The Lewis acid character of boron tri halides follows the order :
A
$\mathrm{BI}_{3}>\mathrm{BBr}_{3}>\mathrm{BCl}_{3}>\mathrm{BF}_{3}$
B
$\mathrm{BCl}_{3}>\mathrm{BF}_{3}>\mathrm{BBr}_{3}>\mathrm{BI}_{3}$
C
$\mathrm{BF}_{3}>\mathrm{BCl}_{3}>\mathrm{BBr}_{3}>\mathrm{BI}_{3}$
D
$\mathrm{BBr}_{3}>\mathrm{BI}_{3}>\mathrm{BCl}_{3}>\mathrm{BF}_{3}$
3
JEE Main 2023 (Online) 31st January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Given below are two statements :

Statement I: Upon heating a borax bead dipped in cupric sulphate in a luminous flame, the colour of the bead becomes green

Statement II: The green colour observed is due to the formation of copper(I) metaborate

In light of the above statements, choose the most appropriate answer from the options given below :
A
Both Statement I and Statement II are false
B
Both Statement I and Statement II are true
C
Statement I is false but Statement II is true
D
Statement I is true but Statement II is false
4
JEE Main 2023 (Online) 30th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Boric acid is solid, whereas $\mathrm{BF}_3$ is gas at room temperature because of :
A
Strong van der Waal's interaction in Boric acid
B
Strong covalent bond in $\mathrm{BF}_{3}$
C
Strong hydrogen bond in Boric acid
D
Strong ionic bond in Boric acid
JEE Main Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12