List of top Chemistry Questions on Chemistry in Everyday Life

The F$^-$ ions make the enamel on teeth much harder by converting hydroxyapatite (the enamel on the surface of teeth) into much harder fluoroapatite having the formula:

Which of the following statements is not correct about rusting of iron?

What product is obtained when chloroform reacts with oxygen in presence of light?

Which among the following chemicals is used for control of humidity?

Which among the following is not an Analgesic?

The total number of lone pairs of electrons on oxygen atoms of ozone is _______

Match List I with List II

LIST I (Name of polymer)		LIST II (Uses)
A	Glyptal	I	Flexible pipes
B	Neoprene	II	Synthetic wool
C	Acrilan	III	Paints and Lacquers
D	LDP	IV	Gaskets

Choose the correct answer from the options given below:

$Nd ^{2+}=$

Which of the following compounds are not used as disinfectants? 
A. Chloroxylenol
B. Bithional
C. Veronal
D. Prontosil
E. Terpineol
Choose the correct answer from the options given below:

Given below are two statements :
Statement I : Upon heating a borax bead dipped in cupric sulphate in a luminous flame, the colour of the bead becomes green.
Statement II : The green colour observerd is due to the formation of copper(I) metaborate.
In the light of the above statements, choose the most appropriate answer from the options given below :

The number of pairs of the solutions having the same value of the osmotic pressure from the following is ______ (Assume $100\%$ ionization) 
A. $0.500 \,M \,C _2 H _5 OH$ (aq) and $0.25 \,M\, KBr$ (aq) 
B. $0.100 \,M \,K _4\left[ Fe ( CN )_6\right]$ (aq) and $0.100\, M\, FeSO _4\left( NH _4\right)_2 SO _4$ (aq) 
C. $0.05\, M \,K _4\left[ Fe ( CN )_6\right]$ (aq) and $0.25\, M\, NaCl ( aq )$ 
D. $0.15\, M\, NaCl ( aq )$ and $0.1\, M \,BaCl _2$ (aq) 
E. $0.02\, M\, KCl MgCl _2 \cdot 6 H _2 O$ (aq) and $0.05\, M\, KCl$ (aq)

Match the column

(P) Antifertility drugs	(A) Norethindrone
(Q) Antihistamines	(B) Seldane
(R) Tranquilizers	(C) Meprobamate
(S) Antibiotics	(D) Penicillin

Given below are two statements:
Statement I : H₂​O_2​ is used in the synthesis of Cephalosporin
Statement II : H₂​O₂​ is used for the restoration of aerobic conditions to sewage wastes.
In the light of the above statements, choose the most appropriate answer from the options given below :

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason $R$ 
Assertion A : Antihistamines do not affect the secretion of acid in stomach 
Reason R : Antiallergic and antacid drugs work on different receptors 
In the light of the above statements, choose the correct answer from the options given below:

Following figure shows spectrum of an ideal black body at four different temperatures The number of correct statement/s from the following is ________

A. $T _4> T _3> T _2> T _1$ 
B. The black body consists of particles performing simple harmonic motion 
C. The peak of the spectrum shifts to shorter wavelength as temperature increases 
D. $\frac{T_1}{v_1}=\frac{T_2}{v_2}=\frac{T_3}{v_3} \neq$ constant
E. The given spectrum could be explained using quantisation of energy

Amongst the following compounds, which one is an antacid?

Given below are two statements, one is labelled as Assertion $A$ and the other is labelled as Reason R 
Assertion A : Butylated hydroxy anisole when added to butter increases its shelf life
Reason R : Butylated hydroxy anisole is more reactive towards oxygen than food
In the light of the above statements,choose the most appropriate answer from the options given below

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R)
Assertion (A): Gypsum is used for making fireproof wall boards
Reason (R): Gypsum is unstable at high temperatures
In the light of the above statements, choose the correct answer from the options given below :

Match List I with List II 

List I		List II
A	Tranquilizers	i	Anti blood clotting
B	Aspirin	ii	Salvarsan
C	Antibiotic	iii	Antidepressant drugs
D	Antiseptic	iv	Soframicine

 Choose the correct answer from the options given below:

Match List I with List II:

List I (Mixture)		List II (Separation Technique)
A	CHCl3​+C6​H5​NH2​	i	Steam distillation
B	C6​H14​+C5​H12​	ii	Differential extraction
C	C6​H5​NH2​+H2​O	iii	Distillation
D	Organic compound in H2​O	iv	Fractional distillation