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Recent questions tagged cbsc

Colourless plastids are known as

asked Jul 25, 2017 by priyanka.c

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The recently originated problem of environment is/are

asked Jul 25, 2017 by priyanka.c

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Wind causes weathering of rocks through

asked Jul 25, 2017 by priyanka.c

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Toxic chemical released by paper industry is

asked Jul 25, 2017 by priyanka.c

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The causative organism of kala azar is

asked Jul 25, 2017 by priyanka.c

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Droplet method of transmission of diseases is found in

asked Jul 25, 2017 by priyanka.c

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The disease that begins abruptly and lasts for a short duration is

asked Jul 25, 2017 by priyanka.c

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Which one is a true fish ?

asked Jul 25, 2017 by priyanka.c

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Which among the following has specialized tissue for water conduction?
(i) Thallophyta
(ii) Bryophyte
(iii) Pteridophyta
(iv) Gymnosperms

asked Jul 25, 2017 by priyanka.c

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The largest phylum is

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The principle cereal crop in India is

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Milk does not provide

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Pores of sieve plates

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Tongue is made up of

asked Jul 25, 2017 by priyanka.c

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Which of the following can be crystallised?

asked Jul 25, 2017 by priyanka.c

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Lysosomes function in the cell as

asked Jul 25, 2017 by priyanka.c

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One of the factor that does not lead to the soil formation in nature is

asked Jul 24, 2017 by priyanka.c

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In the absence of atmosphere around the world, the temperature of the earth will be

asked Jul 24, 2017 by priyanka.c

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Air is

asked Jul 24, 2017 by priyanka.c

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A disease in human caused by a bacterium is

asked Jul 24, 2017 by priyanka.c

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The most common anti malarial drug is got from

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Who proposed five kingdom classification?

asked Jul 24, 2017 by priyanka.c

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Mammals

asked Jul 24, 2017 by priyanka.c

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What is true of scientific name?

asked Jul 24, 2017 by priyanka.c

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Rhizobium is present in the

asked Jul 24, 2017 by priyanka.c

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Which one of the following is a micro nutrient ?

asked Jul 24, 2017 by priyanka.c

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Haversian canal is present in

asked Jul 24, 2017 by priyanka.c

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Intestine absorbs digested food materials. Which type of epithelial cells are responsible for that?

asked Jul 24, 2017 by priyanka.c

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Heart muscles are

asked Jul 24, 2017 by priyanka.c

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Root hairs absorbs water from the soil through

asked Jul 24, 2017 by priyanka.c

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Which of the following is an incorrect pair?

asked Jul 24, 2017 by priyanka.c

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Fertilizers cause

asked Jul 24, 2017 by priyanka.c

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Man made source of air pollution is

asked Jul 24, 2017 by priyanka.c

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Vaccine is not available against which of the following diseases?

asked Jul 24, 2017 by priyanka.c

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Which of the statements is incorrect about tuberculosis?

asked Jul 24, 2017 by priyanka.c

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Air bladder is present in

asked Jul 24, 2017 by priyanka.c

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Father of Taxonomy is

asked Jul 24, 2017 by priyanka.c

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Sustainable agriculture involves

asked Jul 24, 2017 by priyanka.c

2 answers

Which of the following is a natural insecticide?

asked Jul 24, 2017 by priyanka.c

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When both crops and live stock are raised on the same farm it is known as

asked Jul 24, 2017 by priyanka.c

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A person met with an accident in which two long bones of hand were dislocated. Which among the following may be the reason?

asked Jul 24, 2017 by priyanka.c

2 answers

Which of the following tissue has dead cells ?

asked Jul 24, 2017 by priyanka.c

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Cork is impervious to water because it has deposition of

asked Jul 24, 2017 by priyanka.c

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Grapes placed in concentrated saline solution will

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Photosynthetic pigments are located in the

asked Jul 24, 2017 by priyanka.c

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Ribosomes are made up of

asked Jul 24, 2017 by priyanka.c

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ODBAC is a fixed rectangular conductor of negligible resistance (co is not connected) and OP is a conductor which rotates clockwise with an angular velocity $w$ as shown in the fig. The entire system is in a uniform magnetic field B whose direction is along the normal to the surface of the rectangular conductor ABDC. The conductor OP is in electric contact with ABDC. The rotating conductor has resistance of X per unit length. Find the current in the rotating conductor as it rotates by $180^{\circ}$

asked Jan 1, 2017 by priyanka.c

1 answer

A conducting wire XY of mass $m$ and negligible resistance slides smoothly on two parallel conducting wire as shown in the fig. The closed circuit has a resistance R due to AC. AB and CD are perfect conductors. There is a magnetic field $B = B (+) \hat {k}$ . Is there a decrease in kinetic energy of XY equalling the heat lost in R ?

asked Jan 1, 2017 by priyanka.c

1 answer

A conducting wire XY of mass $m$ and negligible resistance slides smoothly on two parallel conducting wire as shown in the fig. The closed circuit has a resistance R due to AC. AB and CD are perfect conductors. There is a magnetic field $B = B (+) \hat {k}$ If B is independent of time, obtain $V (t)$ assuming $V(0) = u_0$

asked Jan 1, 2017 by priyanka.c

1 answer

A magnetic field $B =B_o \sin(wt) \hat{k}$ covers a large region where a wire AB slides smoothly over two parallel conductors separated by a distance d, as shown in the fig. The wire are in the x-y plane. The wire AB (of length d) has resistance R and the parallel wires have negligible resistance. It AB is moving velocity $v$, what is the force needed to keep the wire at constant velocity ?

asked Jan 1, 2017 by priyanka.c

1 answer

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