Recent questions and answers in Chemistry

Which one of the following statements is not correct? (a) The value of equilibrium constant is changed in the presence of a catalyst in the reaction at equilibrium. (b) Enzymes catalyse mainly bio-chemical reactions. (c) Coenzymes increase the catalytic ...

1 like 0 dislike

1 answer

by Huzaifa Noori in Biomolecules answered Mar 12 35 views

Which of the following statements is not correct?

Which of the following statements is not correct? (a) Ovalbumin is a simple food reserve in egg white. (b) Blood proteins thrombin and fibrinogen are involved in blood clotting. (c) Denaturation makes the proteins more active. (d) Insulin maintains sugar ...

1 like 0 dislike

1 answer

by ROHITH in General Principles and Processes of Isolation of Elements answered Mar 12 41 views

Composition of gun metal is

Composition of gun metal is (1) Cu, Zn, Sn (2) Al, Mg, Mn, Cu (3) Cu, Ni, Fe (4) Cu, Sn, Fe

1 like 0 dislike

1 answer

by Bullesh in General Principles and Processes of Isolation of Elements answered Mar 11 38 views

Quantities plotted on y & x-axis on Ellingham diagram are

2 like 0 dislike

1 answer

by JeeNeetQnA in Some p - Block Elements asked Mar 10 38 views

In B2H6 ....

In B2H6 (1) BH3 is a lewis base (2) External B-H bonds have less p-character (3) All bond angles are 120° (4) B-H-B bonds are not identical

2 like 0 dislike

0 answers

by JeeNeetQnA in Polymers asked Mar 10 29 views

Which among the following is true ?

Which among the following is true ? (1) Buna-N is a natural polymer (2) Buna-N's manufacture requires nascent oxygen (3) Neoprene is addition co-polymer and used in bucket formation (4) Buna-S is straight linear polymer and is thermosetting plastic

2 like 0 dislike

0 answers

by JeeNeetQnA in Biomolecules asked Mar 10 11 views

Lactose contains which carbon Link between galactose and glucose

2 like 0 dislike

0 answers

by anonymous in s - Block Elements (Alkali and Alkaline Earth Metals) answered Mar 7 62 views

Among the following compounds how many are amphoteric in nature Be(OH)2, BeO, Ba(OH)2, Sr(OH)2

1 like 0 dislike

1 answer

by momin in Some Basic Concepts of Chemistry answered Mar 7 28 views

The ration of the mass percentages of 'C & H' and 'C & O' of a saturated acyclic organic compound 'X' are 4 : 1

2 like 0 dislike

1 answer

by momin in Atomic Structure answered Mar 7 80 views

The work function of sodium metal is 4.41 × 10–19 J. If photons of wavelength 300 nm are incident on the metal,

2 like 0 dislike

1 answer

by momin in Classification of Elements and Periodicity in Properties answered Mar 7 56 views

Three elements X, Y and Z are in the 3rd period of the periodic table. The oxides of X, Y and Z, respectively

2 like 0 dislike

1 answer

by momin in Classification of Elements and Periodicity in Properties answered Mar 7 45 views

Two elements A and B have similar chemical properties. They don't form solid hydrogencarbonates, but react with nitrogen

2 like 0 dislike

1 answer

by momin in Chemistry In Everyday Life answered Mar 7 48 views

If you spill a chemical toilet cleaning liquid on your hand, your first aid would be:

2 like 0 dislike

1 answer

by momin in Chemical Bonding and Molecular Structure answered Mar 7 60 views

The shape/structure of [XeF5]– and XeO3F2, respectively are :

2 like 0 dislike

1 answer

by momin in Coordination Compounds answered Mar 7 40 views

The one that is not expected to show isomerism is:

The one that is not expected to show isomerism is: (1) [Ni(NH3)2Cl2] (2) [Ni(NH3)4(H2O)2]2+ (3) [Ni(en)3]2+ (4) [Pt(NH3)2Cl2]

2 like 0 dislike

1 answer

by momin in Chemical Bonding and Molecular Structure answered Mar 7 87 views

The molecular geometry of SF6 is octahedral. What is the geometry of SF4 (including lone pair(s) of electrons, if (any)?

2 like 0 dislike

2 answers

by momin in Atomic Structure answered Mar 7 92 views

The number of subshells associated with n = 4 and m = –2 quantum numbers is:

2 like 0 dislike

1 answer

by momin in Solutions answered Mar 7 32 views

The size of a raw mango shrinks to a much smaller size when kept in a concentrated salt solution.

2 like 0 dislike

1 answer

by momin in Surface Chemistry answered Mar 7 44 views

Amongst the following statements regarding adsorption, those that are valid are: (a) ΔH becomes less negative

2 like 0 dislike

1 answer

by momin in Chemistry answered Mar 7 28 views

Cast iron is used for the manufacture of :

Cast iron is used for the manufacture of : (1) wrought iron and steel (2) wrought iron, pig iron and steel (3) wrought iron and pig iron (4) pig iron, scrap iron and steel

2 like 0 dislike

1 answer

by anonymous in Chemistry answered Mar 6 142 views

S-1: Colourless cupric metaborate is converted into cuprous metaborate in luminous flame. S-2: Cuprous metaborate

1 like 0 dislike

1 answer

Recent questions and answers in Chemistry

Categories

Most popular tags