A. As nitrometer
B. To remove air bubbles from molten metal
C. To produce alloy
D. As insulator
A. 26%
B. 27%
C. 37%
D. <2.6%
A. 4
B. 2
C. 1
D. 6
A. 1s2 2s2 2p3
B. 1s2 2s2 2p6 3s2 3p1
C. 1s2 2s2 2p4
D. 1s2 2s2 2p6 3s2 3p6 4s2 3d1
A. Acidic oxide
B. Basic oxide
C. Amphoteric oxide
D. It does not exists
A. Heat resistant
B. Low melting
C. Used to prepare chemical garden
D. Green in colour
A. More soluble in cold water
B. More soluble in hot water
C. Insoluble in water
D. Soluble only in organic solvents
A. Molecular addition compounds
B. Molecular crystals
C. Semiconductors
D. Ionic compounds
A. Small size
B. High nuclear charge
C. Both A and B
D. No authorized justification yet