Which of the following is a macro nutrient ?
Which of the following is a macro nutrient ?
A. boron
B. iron
C. copper
D. carbon
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In partially miscible liquids the two layers are___________________?
In partially miscible liquids the two layers are___________________?A. saturated solutions of each liquid
B. unsaturated solutions of each liquid
C. normal solution of each liquid
D. no layer formation takes placeSize of molecule depends upon________________?
Size of molecule depends upon________________?A. Atomicity
B. Shape of molecule
C. Both A and B
D. Difficult to predictWhich of the following is the formula of chrome red ?
Which of the following is the formula of chrome red ?A. Pb3 O4
B. 2Pb CO3 – Pb (OH)2
C. Pb Cr O4 – Pb (OH)2
D. Pb2OWhen Ammonia is used as a refrigerant in vapour compression cycle?
When Ammonia is used as a refrigerant in vapour compression cycle?A. Cu Tubing used
B. Steel tubes used
C. Both a & b
D. Material does not effect by refrigerantSodium carbonate is produced by____________?
Sodium carbonate is produced by____________?
A. haber process
B. Amonia solvay process
C. decons process
D. lead chamber processThe leements in which d or f orbitals are in the process of completion are__________________?
The leements in which d or f orbitals are in the process of completion are__________________?A. outer transition elements
B. inner transition elements
C. typical transition elements
D. transition elements