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hriday
Questions (17)
Find the ratio of the price of pencil to that of price of ball pen If the cost of pencil is Rs 96 per score and ball pen cost rs
1 answer
485 views
Light of frequency 1.5 times the threshold frequency is incident on photo-sensitive material.If the frequency is halved &
1 answer
1,093 views
the quantity of electricity required to reduce 12.3g of nitrobenzene to aniline assuming 50% current efficiency is
1. 115800 C 2.
7 answers
5,641 views
A current of 0.965 A is passed through 500 ml of 0.2 M solution of ZnSO4 for 10 min. The molarity of Zn 2+ after deposition of
1 answer
910 views
A current of 0.965 A is passed through 500 ml of 0.2 M solution of ZnSO4 for 10 min. The molarity of Zn2+ after deposition of Zn
2 answers
1,950 views
the ground stste energy of H- atom is -13.6 eV. the energy needed to ionise H- atom from its second excited state is
1.51 eV 3.4
1 answer
1,051 views
two small objects of masses 'm' & '2m' each are attaached to the ends of a light rigid rod of length 'L' . the rod is pivoted at
1 answer
850 views
In a circuit L,C & R are connected in parallel . At any instant current through inductor is 0.8 A,current through capacitor is
1 answer
578 views
A horizontal disc rotating freely about a vertical axis makes 90 revolutions per minute. A small piece of wax of mass “m”
1 answer
1,769 views
A horizontal disc rotating freely about a vertical axis makes 90 revolutions per minute reduces to 60,then find the moment of
1 answer
742 views
the specific heat of a gas is found to be 0.075 calories at constant volume & its formula weight is 40. the atimicity or the
2 answers
2,926 views
the specific heat of a gas is found to be 0.075 calories at constant volume & its formula weight is 40. the atimicity of the gas
2 answers
1,347 views
the combustion of solid benzoic acid is taking place. give the equation of this process & the value of delta Ng.
1 answer
628 views
The specific heat of a gas is found to be 0.075 calories at constant volume and its formula Wt . is 40. the atomicity of the gas
1 answer
606 views
a vessel has 6 g oxygen at a pressure P & temp 400 K . a small hole is made in it so that oxygen leaks out . how much oxygen
3 answers
1,253 views
a vessel has 6 g oxygen at a pressure P & temp 400 K . a small hole is made in it so that oxygen leaks out . how much oxygen
2 answers
508 views
list of rhyming words for std 2
1 answer
472 views