Which of the following is not primary pollutant__________________?
Which of the following is not primary pollutant__________________?
A. SO3
B. CO
C. NO
D. H2SO4
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Which state of matter has the lowest density ?
Which state of matter has the lowest density ?A. Gas
B. Liquid
C. Solid
D. PlasmaThe number of fundamental particles in an atom of the lightest isotope carbon are_______________?
The number of fundamental particles in an atom of the lightest isotope carbon are_______________?A. 6
B. 12
C. 18
D. 20The value of activation energy is primarily determined by_______________?
The value of activation energy is primarily determined by_______________?A. Temperature
B. Effective collision
C. Concentration of reactants
D. Chemical nature of reactants and productsFormaldehyde condenses with phenol in the presence of dilute H2SO4 to yield________________?
Formaldehyde condenses with phenol in the presence of dilute H2SO4 to yield________________?A. Nylon 66
B. urotroe
C. Aniline formaldehyde plastic
D. BakeliteWhat is the Chemical formula of Zinc Hydroxide _________ ?
What is the Chemical formula of Zinc Hydroxide _________ ?A. Zn(OH)2
B. ZNO2
C. Zn2(OH)3
D. ZnOHThe nucleus of an atom of every element will always contain____________________?
The nucleus of an atom of every element will always contain____________________?A. neutrons
B. protons and electrons
C. protons
D. protons and neutrons