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The pairs of bases in DNA are held toget...

The pairs of bases in DNA are held together by

A

Hydrogen bonds

B

Ionic bonds

C

Phosphate groups

D

Deoxyribose groups

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-CHEMICAL BONDING-OBJECTIVE EXERCISE-2B
  1. N2 and O2 are converted into monoanions N(2)^(-) and O(2)^(-) respec...

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  2. Boiling points of methanol, water and dimethyl ether are respectively ...

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  3. The pairs of bases in DNA are held together by

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  4. The pair of molecules forming strongest inter molecular hydrogen bonds...

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  5. The boiling point of p-nitrophenol is higher than that of o-nitropheno...

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  6. The pair of substances that has no hydrogen bonding between them is

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  7. The correct match is

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  8. In SF6 molecules

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  9. Dipolemoment is least in

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  10. The dipole moment of HX molecule is 1.92 D and bond distance is 1.2 A'...

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  11. Which of the following has a net dipole moment ?

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  12. Which of the following will have zero dipole moment?

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  13. The molecules BF3 and NF3 are covalent compounds. But BF3 is non-pol...

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  14. Which of the following has highest dipole moment?

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  15. BeF2 has zero dipole moment where as H2 Ohas a dipole moment because

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  16. Molecule with dipole moment among the following

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  17. Which of the following has highest dipole moment?

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  18. A molecule MX3 has zero dipole moment. The % of's' character in the h...

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  19. A diatomic molecule has a dipole moment 1.2D. If the internuclear dist...

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  20. The C-H bond distance is largest in

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