Three elements needed for the healthy growth of plants are_________________?
Three elements needed for the healthy growth of plants are_________________?
A. N P K
B. N K C
C. N S P
D. N Ca P
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Which one of the following is most acidic?
Which one of the following is most acidic?A. Phenol
B. P-nitrophenol
C. O-nitrophenol
D. M-nitrophenolThe solid particles only posses_____________________?
The solid particles only posses_____________________?A. Translational motion
B. Vibrational motion
C. Rotational motion
D. All of above motionsWhich of the following elements conduct electricity and also melts below 100°C ?
Which of the following elements conduct electricity and also melts below 100°C ?A. Aluminium
B. Sodium
C. Carbon
D. SulphurWhich of the halogen has highest electronegativity ?
Which of the halogen has highest electronegativity ?A. Fluorine
B. Chlorine
C. Bromine
D. IodineAtomic number of Mn is 25 what is the electronic configuration in the ground state________________?
Atomic number of Mn is 25 what is the electronic configuration in the ground state________________?A. 1s2 2s2 2p6 3s2 3p6 3d7
B. 1s2 2s2 2p6 3s2 3p6 4s2 4p5
C. 1s2 2s2 2p6 3s2 3p5 3d10
D. 1s2 2s2 2p6 3s2 3p6 4s23d5Which one of the following raw material is not present in the cement ?
Which one of the following raw material is not present in the cement ?A. lime stone
B. gypsum
C. KNO3
D. iron oxide