The displacement in metres of a body varies with time t in second as y = t2 β t β 2. The displacement is zero for a positive of t equal to
Anonymous Quiz
20%
1s
39%
2s
29%
3s
12%
4s
π2
A boy starts from a point A, travels to a point B at a distance of 3 km from A and returns to A. If he takes two hours to do so, his speed is
Anonymous Quiz
4%
1km/h
34%
1.5 km/h
26%
2.5km/h
35%
3 km/h
π4β€3
In the ground state, an element has 13 electrons in its M-shell. The element is_____.
Anonymous Quiz
19%
Copper
49%
Chromium
24%
Nickel
7%
Iron
π₯3
Consider the ground state of Cr atom (Z = 24). The numbers of electrons with the azimuthal quantum numbers, l = 1 and 2 are, respectively:
Anonymous Quiz
30%
12 and 4
43%
12 and 5
21%
9 and 4
5%
9 and 5
π₯°1π€1
The number of nodal planes present in s Γ s antibonding orbitals is
Anonymous Quiz
18%
1
44%
2
31%
0
7%
3
π2
Shubham Jha - Class 9
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Course link - https://bit.ly/3BbblpG
π«°Actual Price - Rs. 1000
π«°Offer Price for 1st 100 students only - Rs. 365
Let's make Learning Easy!
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π2π₯2
Addd (0.001+0.02) upto correct number of significant figures
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39%
0.021
29%
0.02
26%
0.03
7%
0.001
π6
π₯°4
π₯7
β€3π1
A given solution of naoh contain 4.00g of naoh per liter of solutions calculate the molarity
Anonymous Quiz
31%
0.1M
25%
1.0M
37%
0.2M
7%
2.0M
π4
A 180 metre long train is moving due north at a speed of 25 m/s. A small bird is flying due south, a little above the train, with a speed of 5 m/s. The time taken by the bird to cross the train is
Anonymous Quiz
14%
2s
34%
4s
41%
6s
11%
8s
π2π2π₯°1
A body starts from rest and travels for t second with uniform acceleration of 2 m/sΒ². If the displacement made by it is 16 m, the time of travel t is
Anonymous Quiz
17%
2s
36%
4s
39%
8s
9%
12s
Under similar conditions of pressure and temperature, 40 ml of slightly moist hydrogen chloride gas is mixed with 20 ml of ammonia gas, the final volume of gas at the same temperature and pressure will be
Anonymous Quiz
24%
20ml
36%
40ml
34%
100ml
6%
120ml
π1