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Official Class XI Preparation

(219 Posts)

This thread is dedicated to preparation for Class XI exams. You may share questions from any of the subjects like Mathematics, Science, Accountancy, Business Studies etc.

Question should not exceed 100 characters.Use add options for multiple choice questions and "Uploadimage/Add related data" for passage text papers.
Question should be at least 10 characters long.
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Sri Harsha Sri Harsha
Shared from Environmental Chemistry - III (C... on Mar 23, 2020 10:13 AM

Which of the following species containing mercury is the most toxic?

 
CH3Hg+
HgCl2
Hg2Cl2
Hg metal
Please type your answer before submitting.

Why not Hg metal

Fency
Shared from Human Physiology on Dec 23, 2019 8:24 PM

Bones are connected to each other by

 
tendons
joints
ligaments
muscles
Please type your answer before submitting.

Bones are connected by fibrous ligaments which keeps the joint in place.

Mayank Thakur
Posted on Dec 19, 2019 4:18 PM

Solar cell is used in

 
watches
radio
motors
engines
Please type your answer before submitting.

Even Radios are there

Subhi Gupta
Shared from Classification of Elements on Dec 11, 2019 2:46 AM

Diagonal relationship in the periodic table is shown by the elements of

 
first and second periods
second and third periods
third and fourth periods
None of these
Please type your answer before submitting.

Diagonal relationships occur because of the directions in the trends of various properties as you move across or down the periodic table.

Jam Pavy
Shared from Quadratic Equations - 3 on Aug 25, 2019 1:02 PM

If a is a root of the equation x2 + x + 1 = 0, the value of a703 + a68 + a375 is

 
0
1
- 1
2
Please type your answer before submitting.

Why we have taken w and w^2 as the roots?