Priyapatel

Time taken by person to cover 5 km = After every km, he takes a rest for 5 minutes. Hence, that person will take rest for four times.∴  Required time = (30 + 4 x 5) minutes = 50 minutes.

NO2+Number of electron pairs = 2Number of bond pairs = 2Number of lone pair = 0So, the species is linear with sp hybridisation.NO3-Number of electron pairs = 3Number of bond pairs = 3Number of lone pair = 0So, the species is trigonal planar with sp2 hybridisation
NH4+Number of electron pairs = 4Number of bond pairs = 4Number of lone pair = 0So, the species is tetrahedral with sp3 hybridisation.

Rajasthan Board - Hindi Medium NCERT solutions for Class 9.Get free online study material for Class 9.Find NCERT solutions textbook questions and answers and download NCERT books from Zigya Book-Store.

The narrator volunteered to do packing because he thought he was the best packer. He felt proud of his packing and wanted to show it.

The life of the peddler is bound with loneliness. This idea of being completely alone made the peddler a pessimist. After stealing the money, the peddler tried to escape through the forest but got lost. Left in despair, he recollected his own thoughts on the world being a giant rattrap. A sudden realization came to him that he had finally got himself caught in the rattrap because he allowed himself to be tempted by the bait, the thirty kronor bills. Even the kindness of the ironmaster and especially his daughter failed to make the peddler optimistic about the world. Unlike the other character

27Co2+ - 1s2 2s2 2p6 3s2 3p6 3d7 4s0As Cl- is weak field ligand so no pairing up.Hence it is sp3 hybridized giving tetrahedral geometry.Fe2+ - 1s2 2s2 2p6 3s2 3p6 3d6 4s0
Due to Cl-, back pairing is not observed so it will be sp3 hybridized giving tetrahedral geometry.
Ni2+ - 1s2 2s2 2p6 3s2 3p6 3d8 4s0
Because weak ligand, back pairing is not observed so it will be sp3 i.e. tetrahedral geometry.All the complexes of Pt2+ are square planar including those with weak field ligand such as halide ions

Acetophenone on reaction with sodium hypoidite give iodoform (yellow ppt). Benzophenone does not give this test.

Physical significance: Entropy has been regarded as a measure of disorder or randomness of a system. Thus when a system goes from a more orderly to less orderly state, there is an increase in its randomness and hence entropy of the system increases. Conversely, if the change is one in which there is an increase in orderliness, there is a decrease in entropy. For example, when a solid changes to a liquid, an increase in entropy takes place, because with the breaking of the orderly arrangement of the molecules in the crystal to the less orderly liquid state, the randomness increases. The proces

Before the collision, the rod is at rest and bullet is moving with velocity u at a distance 0.8L. Therefore angular momentum of system before impact is,Bullet after hitting gets embedded into the rod.Let  be the angular velocity of the system after impact. The angular momentum of system after impact is, Using the law of conservation of momentum This is the angular velocity of the system after the impact. 

M1D1T1 = M2D2T2∴ Minimum number of men required = 313

Listening Versus Hearing1. Listening vs. Hearing1.1 Difference between the two synonyms1.2 Hearing but not listening1.3 Paying attention1.4 Hearing as a physical phenomenon1.5 Consciously using your mind1.6 Mind full of needless chatter1.7 Accommodating what is said
2. Judgement about the speaker2.1 Prejudiced & preconceived notions2.2 Dying to pronounce right or wrong2.3 Neg. mindset2.4 Proving our ver. of things right
3. Ideal way of listening3.1 Listen first3.2 Listen with awareness3.3 Think before you judge3.4 Not to leave words unspoken3.5 Speak your mind out
4. Listening to understan

There are two vectors P and Q.It is given that, Let, angle between P and Q is ,

Diameter of the ball= MSR + CSR x (least count) - zero error = 0.5 cm + 25 x 0.001 - (-0.004)= 0.5 + 0.025 + 0.004= 0.529 cm

We have,4s2 – 4s + 1 = 4s2 – 2s –2s + 1 = (2s–1)(2s– 1)So, the value of 4s2 – 4s + 1 is zero, when 2s – 1 = 0 or 2s – 1 = 0i.e.  when   Therefore, the zeroes of 4s2 – 4s + 1 are  Now,     Sum of zeroes =                               Product of zeroes  =                               

The French Revolution opened up the possibility of creating a dramatic change in the way in which society was structured. Not everyone in Europe, however, wanted a complete transformation. Some were ‘conservatives’, while others were ‘liberals’ or ‘radicals’.

Answer:
The electrolysis of an aqueous solution of copper sulphate using copper electrodes (i.e. using active electrodes) results in transfer of copper metal fr

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Let A be the point of observation, C and E be the two points of the plane. It is given that after 15 seconds angle of elevation changes from 60° to 30°.i.e

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