The transition metals mostly are

• paramagnetic

• diamagnetic

• both 'a' and 'b'

• neither diamagnetic nor paramagnetic

Cadmium rods are used for which purpose?

• emit electrons

• absorb neutrons

• emit neutrons

• absorb electrons

What is the effect of dilution on the equivalent conductance of strong electrolyte?

• Decrease on dilution

• Remains unchanged

• Increase on dilution

• None of the above

Which one of the following molecules undergoes polymerisation to form natural rubber?

• Styrene

• 2-methyl-1, 3-butadiene

• Ethylene

• Iso-butene

An asymmetric carbon atom is which

• attached three atoms or groups are different

• attached all the atoms or groups are different

• attached two atoms or groups are different

• attached all the atoms or groups are the same

Hexamethylenetetramine is used as

• urinary antiseptic

• antipyretic

• analgesic

• all of these

47.

Vinegar contains

• 100% acetic acid

• 10- 20% acetic acid

• 7 - 8% acetic acid

• 1% acetic acid

Which of following is the correct order of increasing reactivity?

• RCOOR' < RCOCl < RCONH₂

• RCOOR' < RCONH₂ < RCOCl

• RCOCl < RCONH₂ < RCOOR'

• RCONH₂ < RCOOR' < RCOCl

Enzymes are

• fatty acids

• oils

• minerals

• proteins

What is the name of reaction when benzaldehyde changes in to benzyl alcohol?

• Cannizzaro's reaction

• Wurtz reaction

• Kolbe reaction

• Friedel-Craft's reaction