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

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

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by JeeNeetQnA in General Principles and Processes of Isolation of Elements asked Mar 10 39 views

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

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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

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by JeeNeetQnA in Environmental Chemistry asked Mar 10 77 views

Statement -1: An allotrope of oxygen is responsible for reducing smog. Statement -2: Oxides of nitrogen and sulphur

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by JeeNeetQnA in Biomolecules asked Mar 10 11 views

Lactose contains which carbon Link between galactose and glucose

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by JeeNeetQnA in Atomic Structure asked Mar 4 117 views

Mass of Li3+ is 8.33 times mass of proton Li3+ and proton are accelerated through same potential difference.

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by JeeNeetQnA in Some Basic Concepts of Chemistry asked Mar 4 29 views

4.5 gm of solute having molar mass of 90 gm/mol is dissolved in water to make 250 ml solution. Calculate molarity

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by JeeNeetQnA in s - Block Elements (Alkali and Alkaline Earth Metals) asked Mar 4 62 views

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

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by JeeNeetQnA in Coordination Compounds asked Mar 4 18 views

What is the coordination number in Body centred cubic (BCC) arrangement of identical particles

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by JeeNeetQnA in General Principles and Processes of Isolation of Elements asked Mar 4 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

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by JeeNeetQnA in Redox Reactions asked Mar 4 16 views

(1) I2 + H2O2 + 2OH− ⟶ 2I− + 2H2O + O2 (2) H2O2 + HOCl ⟶ Cl− + H3O+ + O2

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by JeeNeetQnA in Chemistry asked Mar 4 142 views

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

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by JeeNeetQnA in General Principles and Processes of Isolation of Elements asked Mar 4 51 views

Which of the following ores are concentrated by cyanide of group Ist element.

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by JeeNeetQnA in Coordination Compounds asked Mar 4 19 views

Which of the following have both the compound isostructural.

Which of the following have both the compound isostructural. (A) TiCl4, SiCl4 (B) SO42-, CrO42- (C) NH3, NO3– (D) ClF3, BCl3 (1) A,B (2) A,C (3) B,C (4) A,D

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by JeeNeetQnA in Environmental Chemistry asked Mar 4 493 views

The gas evolved due to anaerobic degradation of vegetation causes?

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by JeeNeetQnA in Biomolecules asked Mar 4 30 views

Which force is responsible for the stacking of α-helix structure of protein?

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by JeeNeetQnA in Electrochemistry asked Feb 8 120 views

For the disproportionation reaction 2Cu+(aq) ⇌ Cu(s) + Cu2+(aq) at 298 K, In K (where K is the equilibrium constant) is

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by JeeNeetQnA in Coordination Compounds asked Feb 8 148 views

Simplified absorption spectra of three complexes ((i) and (ii) and (iii)) of M+n ion are provided below; their λmax

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by JeeNeetQnA in Biomolecules asked Feb 8 93 views

The correct observation in the following reaction is: Sucrose → Gly cosidic bond Cleavage (Hydrolysis) A + B →

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by JeeNeetQnA in Some Basic Principles of Organic Chemistry asked Feb 8 86 views

Arrange the following labelled hydrogens in decreasing order of acidity:

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by JeeNeetQnA in Chemical Kinetics asked Feb 8 37 views

Consider the reaction sequence given below : Which of the following statements is true:

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by JeeNeetQnA in Alcohols, Phenols and Ethers asked Feb 8 29 views

The major product of the following reaction is:

The major product of the following reaction is:

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by JeeNeetQnA in Chemical Kinetics asked Feb 8 65 views

The results given in the below table were obtained during kinetic studies of the following reaction : 2A + B → C + D

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by JeeNeetQnA in Hydrocarbons asked Feb 8 49 views

The major product obtained from E2-elimination of 3-bromo-2-fluoropentane is

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by JeeNeetQnA in Chemical Bonding and Molecular Structure asked Feb 8 43 views

Match the type of interaction in column A with the distance dependence of their interaction energy in column B :

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by JeeNeetQnA in Haloalkanes and Haloarenes asked Feb 8 39 views

Two compounds A and B with same molecular formula (C3H6O) undergo Grignard reaction with methylmagnesium bromide

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by JeeNeetQnA in Alcohols, Phenols and Ethers asked Feb 8 50 views

An organic compound 'A' (C9H10O) when treated with conc. HI undergoes cleavage to yield compound 'B' and 'C'.

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