• For stable equilibrium, the centre of gravity should be at minimum height.
• It is the center point from which the weight is evenly dispersed on all sides.
• The lower the centre of gravity is, the more stable the object. Also, increasing the area of the base will also increase the stability of an object, the bigger the area the more stable the object.

Speed of boat in still water = x km/h (say) and that of stream = y km/h
If one takes 5 km in 1 hr , then it'll take 1 km in 12 mins.
Therefore,
(x-y)×12 = 1   .........(i)
(x+y)×(7.5/60) = 1  ......(ii)
(x+y)×7.5 =(x-y)×12
y = 3×(x/13)
Substituting y in (ii)
x= 6.5

Zinc phosphide(Zn₃P₂) is the inorganic chemical compound. It is a grey solid, although commercial samples are often dark or even black. It is used as a rodenticide. Rodenticide means rodent killer.

Given that, Rahul has more money than Radha, Ravina and Babita it means

Rahul > (Radha, Ravina and Babita) _________(1)

Kareena has more money than Radha and Babita but less than Ravina it means

Ravina > Kareena > (Radha and Babita) ____________(2)

Babita does not have the lowest amount money it means

Ravina > Kareena > Babita > Radha _________(3)

On combining (1), (2) and (3),

Rahul > Ravina > Kareena > Babita > Radha

Hence, Radha has the lowest amount money among them.

Only conclusion I follows. The most obvious reason why thousands of people evacuated their homes was that of the threat of an uncontrolled explosion. Conclusion II contains extraneous information that cannot be concluded from the given statement. Therefore, option A is the correct answer.

There are 7 triangles in all; ABD, KLM, IJF, JCD, AHI, EGH, MNO.

Dr Ramesh Pokhriyal 'Nishank' is the current Union Minister of Human Resource Development (HRD).

The former chief minister and BJP MP Ramesh Pokhriyal Nishank won from Haridwar, (Uttarakhand) constituency with over 50% Muslim and Dalit voters, with a margin of 258,729 votes and bagging 665,674 votes.

His main rivals, Congress candidate Ambirsh Kumar received 4,06,264, while the Bahujan Samaj Party (BSP) candidate Antriksh Saini got 1,73,169 votes.

• The last ruler was Dhana Nanda who was defeated by Chandra Gupta Maurya thus founding Mauryan Empire in 321 BC.

• The Nandas were the first Non Kshatriya rulers in the history of India.

• Nanda ruled almost all parts of India for 100 years.

Number of students passed with second class in the year 2015 = 50

Total number of students passed in 2015 = 160

Let the marked price of the watch be Rs x