1
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following in sewage treatment removes suspended solids ?
A
Secondary treatment
B
Tertiary treatment
C
Primary treatment
D
Sludge treatment
2
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
Select the mismatch :
A
Rhodospirillum - Mycorrhiza
B
Anabaena - Nitrogen fixer
C
Rhizobium - Alfalfa
D
Frania - Alnus
3
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following is correctly matched for the product produced by them ?
A
Acetobacter aceti : Antibiotics
B
Penicillium notatum : Acetic acid
C
Methanobacterium : Lactic acid
D
Sacchromyces cerevisiae : Ethanol
4
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
Which one is the wrong statement ?
A
The uncertainty principle is

$$\Delta E \times \Delta t \ge {h \over {4\pi }}$$
B
Half filled and fully filled orbitals have greater stability due to greater exchange energy, greater symmetry and more balanced arrangement.
C
The energy of 2s-orbital is less than the energy of 2p-orbital in case of hydrogen like atoms.
D
de-Broglie's wavelength is given by

$$\lambda = {h \over {mv}}$$, where m = mass of the particle,

v $$=$$ group velocity of the particle.
EXAM MAP