1
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
Consider the reactions,
NEET 2017 Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 73 English
Identify A, X, Y and Z.
A
A-Methoxymethane, X-Ethanol,
Y-Ethanoic acid, Z-Semicarbazide.
B
A-Ethanal, X-Ethanol,
Y-But-2-enal, Z-Semicarbazone.
C
A-Ethanol, X-Acetalfehyde,
Y-Butanone, Z-Hydrazone.
D
A-Methoxymethane, X-Ethanoic acid,
Y-Acetate ion, Z-Hydrazine.
2
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
In an electromagnetic wave in free space that root mean square value of the electric field is Erms = 6 V m$$-$$1. The peak value of the magnetic field is
A
2.83 $$ \times $$ 10$$-$$8 T
B
0.70 $$ \times $$ 10$$-$$8 T
C
4.23 $$ \times $$ 10$$-$$8 T
D
1.41 $$ \times $$ 10$$-$$8 T
3
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
If $$\theta $$1 and $$\theta $$2 be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of dip $$\theta $$ is given by
A
tan2$$\theta $$ = tan2$$\theta $$1 + tan2$$\theta $$2
B
cot2$$\theta $$ = cot2$$\theta $$1 $$-$$cot2$$\theta $$2
C
tan2$$\theta $$ = tan2$$\theta $$1 $$-$$ tan2$$\theta $$2
D
cot2$$\theta $$ = cot2$$\theta $$1 + cot2$$\theta $$2
4
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Change Language
A capacitor is charged by a battery. The battery is removed and another identical unchanged capacitor is connected in parallel. The total electrostatic energy of resulting system
A
decreases by a factor of 2
B
remains the same
C
increases by a factor of 2
D
increases by a factor of 4