Boron cannot form which one of the following anions?
(1) BO2-
(2) BF63-
(3) BH4-
(4) B(OH)4-
Due to absence of low lying vacant d orbital in B, sp3d2hybridization is not possible hence BF63-will not formed.
The percentage of nitrogen in the air is about
View Answer Report Error Discuss
Methane contributes towards global warming so it is called a _________________ gas.
Which of the following is a metal?
Which of the following group is NOT Dobereiner Triads?
Safety matches contain
Air ___________________ are the substances which contaminate the air.
By using which foam the Researchers from Indian Institute of Technology – Bombay have made a low cost piezo resistive vibration sensor?
Which of the following is NOT a compound?
Aptitude and Reasoning
General Knowledge
Puzzles
Interviews
Technical
Certifications
Exams
Job
Roles
True or False
Exams