Bithional is generally added to the soaps as an additive to function as a/an
You've reached today's free limit of 20 questions.
Log in to keep practising for free.
NEET Practice Questions (MCQs) with Answers & Solutions
Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Artificial sweetener which is stable under cold conditions only is
You've reached today's free limit of 20 questions.
Log in to keep practising for free.
Explanation
Aspartame is the only artificial sweetener which is stable at lower temeperature temperature and decomposes at higher temperature.
Antiseptics and disinfectants either kill or prevent growth of microorganisms. Identify which of the following is not true.
You've reached today's free limit of 20 questions.
Log in to keep practising for free.
Explanation
(c) Antiseptics and disinfectants both either kill or prevent the growth of microorganisms. The main point of difference between these two is that the former (antiseptics) are used for living beings whereas disinfectants are not safe for living tissues. These are actually used for inanimate objects like floors, tiles etc.
A substance like phenol in its lower concentration (0.2%) behaves as antiseptic whereas in higher concentration (1%) as disinfectant. Chlorine and iodine are strong disinfectants whereas dilute solutions of boric acid and hydrogen peroxide are mild antiseptics
Which one of the following is employed as antihistamine?
You've reached today's free limit of 20 questions.
Log in to keep practising for free.
Explanation
(a) Diphenylhydramine (benadryl) is used as an antihistamine.
Reactivity order of halides for dehydrohalogenation is
You've reached today's free limit of 20 questions.
Log in to keep practising for free.
Explanation
(b) F,Cl,Br and I are the elements of VII A group. In a group atomic radii increases from top to bottom and the bond dissociation energy decreases as
R-F>R-Cl>R-Br>R-I
So, during dehydrohalogenation R-I bond breaks more easily than R-I bond. Hence, order of reactivity will be
R-I>R-Br>R-Cl>R-F
P is
You've reached today's free limit of 20 questions.
Log in to keep practising for free.
(CH3)3CCI + (CH3)3CO – K+ → Product
You've reached today's free limit of 20 questions.
Log in to keep practising for free.
Explanation
Sterically hindered base leads to elimination products.
Conversion of cyclohexene to cyclohexanol can be conveniently achieved by:
You've reached today's free limit of 20 questions.
Log in to keep practising for free.
Explanation
(c) Hydroboration - oxidation reaction.
Bromination of (E)-2-butenedioic acid gives
You've reached today's free limit of 20 questions.
Log in to keep practising for free.
Explanation
(a) Anti-addition take place.
The electrophilic aromatic substitution proceeds through a:
You've reached today's free limit of 20 questions.
Log in to keep practising for free.
Explanation
The electrophilic aromatic substitution proceeds through the formation of a sigma complex. In this reaction, the electrophilic species (like a carbocation) attacks the aromatic ring, forming a cyclohexadienyl cation intermediate, which is a sigma complex.
Ready to ace NEET?
Free access · No credit card required
Frequently Asked Questions
Yes. You can attempt every NEET question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.
No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.
The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.