Percentage of lead in lead pencil is________?
Percentage of lead in lead pencil is________?
A. Zero
B. 20
C. 80
D. 70
Similar Posts
Which of the following is metasilicic acid ?
Which of the following is metasilicic acid ?A. H2SnO3
B. H2SiO3
C. H3AsO4
D. H3SbO4Which one of the following aqueous solutions will be basic ?
Which one of the following aqueous solutions will be basic ?A. NaCI
B. Na2SO4
C. Na2CO3
D. FeCl3Cassiterite is an ore of_______?
Cassiterite is an ore of_______?A. Mn
B. Ni
C. Sb
D. SnDehalogenation of ethyl tetrahalide will give____________________?
Dehalogenation of ethyl tetrahalide will give____________________?A. ethene
B. ethyne
C. ethyl halide
D. all of the above are possibleThe bond energy of Hydrogen molecule is__________?
The bond energy of Hydrogen molecule is__________?A. 110Kcal/mol
B. 106Kcal/mol
C. 104Kcal/mol
D. 150KJcal/molThe PH of milk is __________?
The PH of milk is __________?A. 6.0
B. 6.5
C. 7.0
D.7.5Milk fresh from the cow typically has a pH between 6.5 and 6.7. The pH of milk changes over time. As milk goes sour, it becomes more acidic and the pH gets lower. This occurs as bacteria in milk convert the sugar lactose into lactic acid