Tags Class 12th

Class 12th

Get insights from 11.9k questions on Class 12th, answered by students, alumni, and experts. You may also ask and answer any question you like about Class 12th

Follow Ask Question

11.9k

Questions

Discussions

Active Users

Followers

New answer posted

6 months ago

Class 12th Environmental chemistry

Which of the following is not a common component of photochemical smog?

0 Follower 1 View

Vishal Baghel

Contributor-Level 10

So₂ is the component of classical smog.

0 0

New answer posted

6 months ago

Class 12th Chemistry

Consider the following statements

(I) Histamine is a potent vasodilator

(II) Brompheniramine is an antihistamine

(III) Tranquilizers and analgesics are neurologically active drugs

The correct statements among the following are

0 Follower 1 View

Vishal Baghel

Contributor-Level 10

Brompheniramine (Dimetapp) acts as antihistamine

0 0

New answer posted

6 months ago

Class 12th Chemistry

Identify the incorrect statement.

0 Follower 1 View

Vishal Baghel

Contributor-Level 10

High density polythene is chemically inert

0 0

New answer posted

6 months ago

Class 12th Physics

A rectangular coil of wire of $500$ turns of area $10 * 5 c m^{2}$ carries a current of $2 A$ in a magnetic field of induction $2 * 10^{- 3} T$ . If the plane of the coil is parallel to the field. The torque on the coil is $(i n N m)$

0 Follower 2 Views

alok kumar singh

Contributor-Level 10

Torque on a bar magnet in external uniform magnetic field is

$\overset{?}{τ} = \overset{?}{M} * \overset{?}{B}$

$\overset{?}{τ} = N I A B \sin ? 90^{0}$

$= 500 * 2 * 50 * 10^{- 4} * 2 * 10^{- 3}$

$= 0.01 N m$

0 0

New answer posted

6 months ago

Class 12th Chemistry

Nitroethane when heated above 573 K yields

0 Follower 3 Views

Vishal Baghel

Contributor-Level 10

$C H_{3} C H_{2} N O_{2} \overset{573 K}{\to} C H_{2} = C H_{2} + H N O_{2}$

0 0

New answer posted

6 months ago

Class 12th Physics Ray Optics and Optical Instruments

An object of height 1.5cm is placed on the axis of a convex lens of focal length 25cm. A real image is formed at a distance of 75cm from the lens. The size of the image will be

0 Follower 1 View