JEE MAIN 2022 ONLINE 25TH JUNE EVENING SHIFT
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Questions are selected across the paper subjects wherever the paper contains that variety.
Match List I with List II
| List - I | List -II | ||
|---|---|---|---|
| A. | Facsimile | I. | Static Document Image |
| B. | Guided media Channel | II. | Local Broadcast Radio |
| C. | Frequency Modulation | III. | Rectangular wave |
| D. | Digital Signal | IV. | Optical Fiber |
Choose the correct answer from the following options:
Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Polluted water may have a value of BOD of the order of 17 ppm.
Reason R : BOD is a measure of oxygen required to oxidise both the bio-degradable an non-biodegradable organic material in water.
In the light of the above statements, choose the most appropriate answer from the options given below.
The sum 1 + 2 . 3 + 3 . 32 + ......... + 10 . 39 is equal to :
Which of the following figure represents the variation of \({l_n}\left( {{R \over {{R_0}}}} \right)\) with \({l_n}A\) (if R = radius of a nucleus and A = its mass number)
The number of bridged oxygen atoms present in compound B formed from the following reactions is
Pb(NO3)2 \(\buildrel {673\,K} \over \longrightarrow\) A + PbO + O2
A \(\buildrel {Dimerise} \over \longrightarrow\) B
A circle touches both the y-axis and the line x + y = 0. Then the locus of its center is :



