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By Arnav Kumar

20 February 2025

Assertion (A): In large animals, oxygen can reach different parts of the animal’s body easily. Reason (R): Respiratory pigments take up oxygen from the air and carry it to body tissues.

By Arnav Kumar

20 February 2025

Which one of the following gets biomagnified at different levels in a food chain ?

By Arnav Kumar

20 February 2025

In the food chains given below, Select the most efficient food chain in terms of energy :

By Arnav Kumar

20 February 2025

The minimum number of identical bulbs of rating 4V; 6W, that can work safely with desired brightness, when connected in series with a 240 V mains supply is:

By Arnav Kumar

20 February 2025

An electric bulb is rated 220 V, 11W. The resistance of its filament when it glows with a power supply of 220 V is :

By Arnav Kumar

20 February 2025

A piece of wire of resistance ‘R’ is cut lengthwise into three identical parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R’, then the value of R/R’ is:

By Arnav Kumar

20 February 2025

An optical device ‘X’ is placed obliquely in the path of a narrow parallel beam of light. If the emergent beam gets displaced laterally, the device ‘X’ is:

By Arnav Kumar

20 February 2025

To get an image of magnification -1 on a screen using a lens of focal length 20 cm, the object distance must be:

By Arnav Kumar

20 February 2025

When a pure-tall pea plant is crossed with a pure-dwarf pea plant, the percentage of tall pea plants in F1 and F2 generation pea plants will be respectively:

By Arnav Kumar

20 February 2025

In a bisexual flower the male gametes are present in the :

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Latest Posts

Assertion (A): In large animals, oxygen can reach different parts of the animal’s body easily. Reason (R): Respiratory pigments take up oxygen from the air and carry it to body tissues.

Which one of the following gets biomagnified at different levels in a food chain ?

In the food chains given below, Select the most efficient food chain in terms of energy :

The minimum number of identical bulbs of rating 4V; 6W, that can work safely with desired brightness, when connected in series with a 240 V mains supply is:

An electric bulb is rated 220 V, 11W. The resistance of its filament when it glows with a power supply of 220 V is :

A piece of wire of resistance ‘R’ is cut lengthwise into three identical parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R’, then the value of R/R’ is:

An optical device ‘X’ is placed obliquely in the path of a narrow parallel beam of light. If the emergent beam gets displaced laterally, the device ‘X’ is:

To get an image of magnification -1 on a screen using a lens of focal length 20 cm, the object distance must be:

When a pure-tall pea plant is crossed with a pure-dwarf pea plant, the percentage of tall pea plants in F1 and F2 generation pea plants will be respectively:

In a bisexual flower the male gametes are present in the :

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