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JEE MAIN 2019 ONLINE 10TH APRIL MORNING SLOT
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90
Duration
180 mins
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IIT-JEE Main - Previous Year Papers
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90questions
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59
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Easy
29
32.2%
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90questions
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Sample questions from this paper
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2019 · Physics · Mechanics · Simple Harmonic Motion
JEE MAIN 2019 ONLINE 10TH APRIL MORNING SLOT
The displacement of a damped harmonic
oscillator is given by
x(t ) = e–0.1t cos (10\(\pi\)t + f).
Here t is in seconds. The time taken for its amplitude of vibration to drop to half of its initial value is close to :
x(t ) = e–0.1t cos (10\(\pi\)t + f).
Here t is in seconds. The time taken for its amplitude of vibration to drop to half of its initial value is close to :
2019 · Chemistry · Physical Chemistry · Gaseous State
JEE MAIN 2019 ONLINE 10TH APRIL MORNING SLOT
Consider the following table :
a and b are vander Waals constants. The correct statement about the gases is :
| Gas | a/(k Pa dm6 mol-1) | b/(dm3 mol-1) |
|---|---|---|
| A | 642.32 | 0.05196 |
| B | 155.21 | 0.04136 |
| C | 431.91 | 0.05196 |
| D | 155.21 | 0.4382 |
a and b are vander Waals constants. The correct statement about the gases is :
2019 · Mathematics · Algebra · Sequences And Series
JEE MAIN 2019 ONLINE 10TH APRIL MORNING SLOT
The sum
\({{3 \times {1^3}} \over {{1^3}}} + {{5 \times ({1^3} + {2^3})} \over {{1^2} + {2^2}}} + {{7 \times \left( {{1^3} + {2^3} + {3^3}} \right)} \over {{1^2} + {2^2} + {3^2}}} + .....\) upto 10 terms is:
\({{3 \times {1^3}} \over {{1^3}}} + {{5 \times ({1^3} + {2^3})} \over {{1^2} + {2^2}}} + {{7 \times \left( {{1^3} + {2^3} + {3^3}} \right)} \over {{1^2} + {2^2} + {3^2}}} + .....\) upto 10 terms is:
2019 · Physics · Modern Physics · Atoms And Nuclei
JEE MAIN 2019 ONLINE 10TH APRIL MORNING SLOT
Two radioactive materials A and B have decay
constants 10\(\lambda\) and \(\lambda\), respectively. It initially
they have the same number of nuclei, then the
ratio of the number of nuclei of A to that of B
will be 1/e after a time :
2019 · Chemistry · Inorganic Chemistry · Hydrogen
JEE MAIN 2019 ONLINE 10TH APRIL MORNING SLOT
The synonym for water gas when used in the production of methanol is :
2019 · Mathematics · Algebra · Mathematical Reasoning
JEE MAIN 2019 ONLINE 10TH APRIL MORNING SLOT
Which one of the following Boolean expressions is a tautology?