CBSE Class 12-science Questions and Answers

Adequate preparation for Class 12 Science subjects also gives you an edge if you want to pursue engineering or medicine-related courses in reputed colleges in India. The reason is, your Class 12 Science syllabus topics are part of the syllabus of competitive exams like JEE or NEET. You can find all the necessary resources for your Class 12 exam preparation along with JEE and NEET prep e-learning materials on TopperLearning.

Now, you can quickly revise Class 12 topics with our complete textbook solutions for NCERT CBSE Class 12 Science. Our Class 12 textbook solutions cover subjects such as Physics, Biology, Chemistry, Mathematics and Hindi. For extra practise, our textbook solutions also consist of free RD Sharma solutions for Class 12 Mathematics. Study thoroughly by using our model answers that are created by subject experts, as per your latest Class 12 Science syllabus and exam guidelines.

Browse through our CBSE Class 12 Science resources and add these resources to your study plan as required. Practise questions from CBSE Class 12 Science Mathematics a little more or revise the most important questions in Physics multiple times. And if you come across difficulties, ask your questions through our ‘Undoubt’ section to get the necessary answers. This way, preparing for your exam with some of the best Class 12 study materials right here on TopperLearning can support you in achieving the desired score in your board exam.

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CBSE XII Science - Physics

the force between two charges at distance r is f what will be the force between these charges if the distance between them is doubled and charges are placed in a medium of dielectric constant 10 ?

Asked by aditya.loya9821 | 23rd Jul, 2021, 06:44: PM

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CBSE XII Science - Chemistry

Of 50% of reaction gets completed in 16 minutes what fraction of reaction would occur in 32 minutes

Asked by arshbhatia0809 | 22nd Jul, 2021, 09:47: PM

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CBSE XII Science - Chemistry

what is the difference between degree of dissociation and degree of association? please add formulas for both...

Asked by yashrajgharte24.12dgatl | 20th Jul, 2021, 02:34: PM

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CBSE XII Science - Physics

What is the relation between electric field and potential difference?

Asked by yashrajgharte24.12dgatl | 19th Jul, 2021, 03:41: PM

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CBSE XII Science - Biology

please tell answer of this question

Asked by goyalpavitarta | 19th Jul, 2021, 12:06: PM

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CBSE XII Science - Biology

what is dicot plant

Asked by adarshraj0646 | 15th Jul, 2021, 08:24: PM

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CBSE XII Science - Mathematics

Value of the determinant | −1 4 5 0 2 6 0 0 3 |is  

Asked by msdismail07 | 15th Jul, 2021, 10:30: AM

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CBSE XII Science - Mathematics

what is mateix

Asked by amansharma08116 | 14th Jul, 2021, 09:37: AM

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CBSE XII Science - Physics

intrinsic

Asked by nailemwangjen79 | 14th Jul, 2021, 09:03: AM

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CBSE XII Science - Chemistry

sir/madam, this doubt will be lenghty. request peace reading. the doubt is w.r.t chapter Amines; to be specific it is w.r.t basicity of amines. in the topic of the comparision of the basic character of alkylamines with ammonia,  the order of basicity of amines is tertiary> secondary> primary in gaseous phase, only due to the +I effect. in gasous phase only +I effect is shown? also in the aqueous phase, the disturbancy in the order of basicity is due to the sum of effects of +I effect, solvation effect and steric hindrance? the order of the stability of the following in aqueous phase: +I effect: tertiary> secondary> primary solvation: primary > secondary > tertiary steric hindrance: primary > secondary > tertiary so does it means that +I is effected in both gaseous and aqueous phase but solvation and steric hindrance are effected only in aqueous phase? also sir there is an order of basicity when R= CH3 group and when R= C2H5 group: R= CH3: secondary> primary> tertiary R= C2H5: secondary> tertiary> primary so sir can we generalise the order that: when R=CH3 group, the order of basicity: secondary> primary> tertiary and when R> CH3 group, the order of basicity: secondary> tertiary> primary

Asked by kaziryan.05 | 12th Jul, 2021, 09:51: PM

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