Percentage of sulfuric acid in lead accumulator is__________________?
Percentage of sulfuric acid in lead accumulator is__________________?
A. 40%
B. 25%
C. 30%
D. 50%
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The main buffer system of the human blood is____________?
The main buffer system of the human blood is____________?A. H2CO3 – HCO3
B. H2CO3 – CO32-
C. CH3COOH – CH3COO–
D. NH2CONH2 – NH2CONH+Which of following is not a base______________?
Which of following is not a base______________?A. KOH
B. NH3
C. PH3
D. BF3Which of the following will not give addition reaction with NaHSO3________________?
Which of the following will not give addition reaction with NaHSO3________________?A. HCHO
B. CH3CHO
C. CH3-CH2-CHO
D. None of the aboveElectric bulb filament is made of__________?
Electric bulb filament is made of__________?A. Copper
B. Aluminum
C. Lead
D. TungstenThe properties of an element mosly corresponds to that isotope which has greater_________________?
The properties of an element mosly corresponds to that isotope which has greater_________________?A. Mass number
B. Atomic mass
C. Relative abundance
D. all of the aboveWhich one of the following halogens is present in Teflon________________?
Which one of the following halogens is present in Teflon________________?A. I2
B. Br2
C. Cl2
D. F2