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How is the cell constant of a conductivity cell determined?

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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If the frequency of incident radiation on a photocell is doubled for the same intensity, what changes will you observe in :-

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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1 answer

Identify the chiral molecule from the following.

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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3 answers

Form the pair of linear equations for the following problems and find their solution by elimination method: Five years ago, Nuri was thrice as old as Sonu. Ten years later, Nuri will be twice as old as Sonu. How old are Nuri and Sonu?

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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A boat goes 24 km upstream and 28 km downstream in 6 hrs. It goes 30 km upstream and 21 km downstream in 6.5 hours. Find the speed of the boat in still water and also speed of the stream.

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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1 answer

Smallest 5-digit number is-

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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4 answers

The momentum of a body of given mass is proportional to its:

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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1 answer

What is the probability of an impossible event ?

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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One mole of \(\mathrm{CO}_{2}\) contains

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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3 answers

State and explain Kohlrausch’s law.

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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\((\mathrm{Ag}+\mathrm{Pb})\) alloy \(\frac{\text { Melt and }}{\text { Zine is added }}\) \((\mathrm{Ag}+\mathrm{Pb}+\mathrm{Zn})\) melt \(\stackrel{\text { Cool }}{\longrightarrow} \frac{\text { Layer } \mathrm{X}}{\text { Layer } \mathrm{Y}}\) Select correct statement based on above scheme.

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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Nucleus is separated from cytoplasm by

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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Let \(P(x)=F(x) G(x)\) and \(Q(x)=F(x) / G(x)\), where \(F\) and \(G\) are the functions whose graphs are shown.

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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1 answer

Tomato is a natural source of which acid ?

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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22 answers

Distinguish between oxidation and reduction.

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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3 answers

Why do we prefer a convex mirror as a rear-view mirror in vehicles?

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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2 answers

A boat covers 32 km upstream and 36 km downstream in 7 hours. Also, it covers 40 km upstream and 48 km downstream in 9 hours. Find the speed of the boat in still water and that of the stream.

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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The resistivity of insulators is of the order of _____

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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3 answers

State Wien’s displacement law. State its significance.

asked Dec 22, 2021 in CBSE by kritika (90.1k points)

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Why are the feet described as ‘transient feet’?

asked Dec 21, 2021 in CBSE by kritika (90.1k points)

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