1
NEET 2021
MCQ (Single Correct Answer)
+4
-1
A particular station of All India Radio, New Delhi broadcasts on a frequency of 1,368 kHz (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is : [speed of light c = 3.0 $$\times$$ 108 ms$$-$$1]
A
21.92 cm
B
219.3 m
C
219.2 m
D
2192 m
2
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Which of the following reactions is the metal displacement reaction? Choose the right option.
A
$$2Pb{(N{O_3})_2} \to 2PbO + 4N{O_2} + {O_2} \uparrow $$
B
$$2KCl{O_3}\buildrel \Delta \over \longrightarrow 2KCl + 3{O_2}$$
C
$$C{r_2}{O_3} + 2Al\buildrel \Delta \over \longrightarrow A{l_2}{O_3} + 2Cr$$
D
$$Fe + 2HCl \to FeC{l_2} + {H_2} \uparrow $$
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The right option for the statement "Tyndall effect is exhibited by", is :
A
Urea solution
B
NaCl solution
C
Glucose solution
D
Starch solution
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
The compound which shows metamerism is :
A
C4H10O
B
C5H12
C
C3H8O
D
C3H6O
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