# Free Quiz for School – Class 12

Attention Class 12 students!!!

Hope you are preparing well for your upcoming exams. To gear up your preparation we have introduced a weekly quiz for class 12. This quiz includes 3 major subjects of 12th: Physics, Chemistry, and Biology. This will increase your preparation level and build your confidence as well. After you are done with the revision, every week you can take up this quiz to know how much you are prepared and your capability in answering questions. You can even increase your speed and manage your time in examination.

**1)Class 12 Free Quiz – Physics**

#### A transverse wave consists of

#### The speed of wave of time period T and propagationconstant k is

#### In the case of standing wave, constructive interference isformed at:

#### A string of length 2 m fixed between two supportsvibrates in two loops. The distance between node andantinode is:

#### Standing waves are produced in a 10 m long stretchedstring. If the string vibrates in 5 segments and the wavevelocity is 20 ms- 1 then the frequency is :

#### Which of the following cannot represent a travellingwave ?

#### In previous problem, the speed of wave is :

#### If wave y = A cos (wt + kx) is moving along x-axis, theshape of pulse at t = 0 and t = 2 s :

#### If a string fixed at both ends vibrates in four loops, thewavelength is 10 cm. The length of string is :

#### In above problem, the distance of plucking point fromthe fixed end is :

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**2)Class 12 Free Quiz – Chemistry**

#### Identify the wrong statement in the follwing (AIEEE 2008)

#### Consider a titration of potassium dichromate solution with acidified Mohr’s salt solution using diphenyl amine as indicator. The number of moles of Mohr’s salt required per mole of dichromate is (IIT JEE 2007)

#### Which has maximum number of atoms ? (IIT JEE 2003)

#### In an organic compound of molar mass 108g/mol, C,H and N atoms are present in 9:1:3.5 by weight Molecular formula can be (AIEEE 2002)

#### Number of atoms in 560 g of Fe (atomic mass = 56) is (AIEEE 2002)

#### How many moles of electron weight one kilogram ? (IIT JEE 2002)

#### "An Oxide of metal contains 60% of the metal. What will be the equivalent weight of the metal ? "

#### A container is filled with 2L of water. What will be the volume of water in m3?

#### The mass of carbon -12 atom considered in the definition of a mole is

#### The drug which is used for treating AIDS victims is

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**3)Class 12 Free Quiz – Maths**

#### If the cube roots of unity are 1, ω, ω2, then the roots of the equation( x - 1 )3+ 8 = 0 are

#### If w =z/z-1/3i and l w l = 1, then z lies on

#### If l z2- 1 l = l z l2+ 1, then z lies on

#### Ifc c+i/c-i =a ib, where a, b, c are real, then the value of a2+ b2 is

#### If z = x + y, then l 3z - 1 l = 3 l z - 2 l represents

#### If the cube roots of unity are 1, ω and ω2, then the value of (1+ω/ω2)3 is

#### If a = cos α + i sin α and b = cos β + i sin β, then the value of1/2(ab + 1/ab) is

#### If a, b, c and u, v, w re complex numbers representing the vertices of two trianglessuch that c = ( 1 - r ) a + b and w = ( 1 - r ) u + rv, where r is a complexnumber, then the two riangles

#### If z = x + iy and w = 1 - iz /z - I , then l w l = 1 implies that, in the complex plane,

#### The points z1, z2, z3 , z4 in the complex plane are the vertices of a parallelogramtaken in order if and only if

**4)Class 12 Free Quiz – Biology**

#### Which of the following is included in five kingdom classification.

Please select 2 correct answers

#### Who is the “Father of Taxonomy” among the following ?

#### Helophiles is also called....

#### According to Whittaker’s classification, prokaryotes are placed in ________

#### Example of blue green algae is in _______

#### By how many criteria, living organisms have been classified into five kingdom.

#### Which one of the following is also called halophiles ?

#### Viroids were discovered by .....

Please select 2 correct answers

#### Which of the following diseases is caused by viroid ?

#### The name virus was given by ________

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Well done guys. We will keep you posted with more quiz on various subjects. Stay tuned and attempt all quizzes. Prepare well and score more.

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