Class 12th
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New answer posted
5 months agoContributor-Level 10
Statement I is true as atoms are electrically neutral because they contain equal number of positive and negative charges.
Statement II is wrong as atom of most of the elements are stable and emit characteristic spectrum. But this statement is not true for every atom.
New answer posted
5 months agoContributor-Level 10
Let the capacity of container be 70L (LCM of 5,7 & 10)
Now,
I container, milk = 28L
Water = 42L
II container, milk = 20L
Water = 50L
III container, milk = 21L
Water = 49L
In large container, milk = (28 + 20 + 21)
= 69L
Water = 42 + 50 + 49
= 141L
Milk : Water = 23 : 47
New answer posted
5 months agoA thermodynamic system is taken through the cycle abcda. The work done by the gas along the path is:
Contributor-Level 10
Path is an isochoric process.
Work done by gas along path is zero.
New answer posted
5 months agoContributor-Level 10
Distance is same. So, speed will be inversely propornonel to time.
Ratio of time taken by car and motorcycle = 28 : 20
= 7 : 5
So, ratio of speed of car and motorcycle = 5 : 7
5/7 = 32/M
M = (32*7)/5 = 44.8 km/hr
New answer posted
5 months agoContributor-Level 10
Work done by 10 men = work done by 16 women
Work done by 15 men = work done by (16*3/2) women
=24 women
So, 40 women and 15 men = 40 women and 24 women
= 64 women
Therefore we can say
16 women will take 40 days
Hence, 64 women will take 40/4 =10 days
New answer posted
5 months agoContributor-Level 10
New area = 1.6*1.6* diagonal area
= 2.56* original area
So, area increased by 156%
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