The correct statements(s) regarding hydrides `(H_(2)E)` of group -16 is/are

The correct statements(s) regarding hydrides `(H_(2)E)` of group -16 is/are
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The correct statements(s) regarding hydrides `(H_(2)E)` of group -16 is/are A. The ... D. The reducing character of hydrides increases down the group
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The correct statements(s) regarding hydrides `(H_(2)E)` of group -16 is/are

Description : The correct statements(s) regarding hydrides `(H_(2)E)` of group -16 is/are

Last Answer : The correct statements(s) regarding hydrides `(H_(2)E)` of group -16 is/are A. The ... D. The reducing character of hydrides increases down the group

The statements regarding hydrides of VIA group elements are i) The order of volatility `H_(2)OltH_(2)TeltH_(2)SeltH_(2)S` ii) The order of B.P `H_(2)O

Description : The statements regarding hydrides of VIA group elements are i) The order of volatility `H_(2)OltH_(2)TeltH_(2)SeltH_(2)S` ii) The order of B.P `H_(2)O

Last Answer : The statements regarding hydrides of VIA group elements are i) The order of volatility `H_(2)OltH_(2)TeltH_ ... are correct D. `i` & iii are correct

(A) : Thermal stability of the hydrides of VIA group elements decreases from `H_(2)O` to `H_(2)Po` (R) : The heats of dissociation of M - H bond of hy

Description : (A) : Thermal stability of the hydrides of VIA group elements decreases from `H_(2)O` to `H_(2)Po` (R) : The heats of dissociation of M - H bond of hy

Last Answer : (A) : Thermal stability of the hydrides of VIA group elements decreases from `H_(2)O` to `H_(2)Po` (R) : ... is false D. (A) is false but (R) is true

The maximum bond angle in hydrides of group 16 elements is in

Description : The maximum bond angle in hydrides of group 16 elements is in

Last Answer : The maximum bond angle in hydrides of group 16 elements is in A. `H_(2)O` B. `H_(2)Se` C. `H_(2)S` D. `H_(2)Te`

Assertion :- Oxidation state of Hydrogen is `+1` in `H_(2)O` while `-1` in `CaH_(2)`. Reason :- `CaH_(2)` is a metal hydride and for metal hydrides, h

Description : Assertion :- Oxidation state of Hydrogen is `+1` in `H_(2)O` while `-1` in `CaH_(2)`. Reason :- `CaH_(2)` is a metal hydride and for metal hydrides, h

Last Answer : Assertion :- Oxidation state of Hydrogen is `+1` in `H_(2)O` while `-1` in `CaH_(2)`. ... Reason is False. D. If both Assertion & Reason are False.

The basic strength of the hydrides of group 15 elements :

Description : The basic strength of the hydrides of group 15 elements :

Last Answer : The basic strength of the hydrides of group 15 elements : A. decreases on moving down the group ... first increases upto `AsH_(3)` and then decreases

The basic strength of the hydrides of group 15 elements :

Description : The basic strength of the hydrides of group 15 elements :

Last Answer : The basic strength of the hydrides of group 15 elements : A. decreases on moving down the group ... first increases upto `AsH_(3)` and then decreases

From the following statements regarding `H_(2)O_(2)`, choose the incorrect statements:

Description : From the following statements regarding `H_(2)O_(2)`, choose the incorrect statements:

Last Answer : From the following statements regarding `H_(2)O_(2)`, choose the incorrect statements: A. It can act only ... dark D. It has to be kept away from dust

From the following statements regarding `H_(2)O_(2)`, choose the incorrect statements:

Description : From the following statements regarding `H_(2)O_(2)`, choose the incorrect statements:

Last Answer : From the following statements regarding `H_(2)O_(2)`, choose the incorrect statements: A. It can act only ... dark D. It has to be kept away from dust

Which of the following statements regarding the manufacture of `H_(2)SO_(4)` by contact process is not true.

Description : Which of the following statements regarding the manufacture of `H_(2)SO_(4)` by contact process is not true.

Last Answer : Which of the following statements regarding the manufacture of `H_(2)SO_(4)` by contact ... higher purity than obtained by lead chamber process.

Which of the following statements regarding the manufacture of `H_(2)SO_(4)` by Contact process is not true?

Description : Which of the following statements regarding the manufacture of `H_(2)SO_(4)` by Contact process is not true?

Last Answer : Which of the following statements regarding the manufacture of `H_(2)SO_(4)` by Contact ... purity than that obtained by lead chamber process.

The incorrect statement(s) regarding oxides of group-16 elements is/are

Description : The incorrect statement(s) regarding oxides of group-16 elements is/are

Last Answer : The incorrect statement(s) regarding oxides of group-16 elements is/are A. Reducing property of dioxide ... agent while `TeO_(2)` is a reducing agent

The incorrect statement(s) regarding oxides of group-16 elements is/are

Description : The incorrect statement(s) regarding oxides of group-16 elements is/are

Last Answer : The incorrect statement(s) regarding oxides of group-16 elements is/are A. Reducing property of dioxide ... agent while `TeO_(2)` is a reducing agent

Reaction (A) `S^(-2)+4H_(2)O_(2)rarrSO_(4)^(2-)+4H_(2)O` (B) `Cl_(2)+H_(2)O_(2)rarr2HCl+O_(2)` The true statement regarding the above reactions is :

Description : Reaction (A) `S^(-2)+4H_(2)O_(2)rarrSO_(4)^(2-)+4H_(2)O` (B) `Cl_(2)+H_(2)O_(2)rarr2HCl+O_(2)` The true statement regarding the above reactions is :

Last Answer : Reaction (A) `S^(-2)+4H_(2)O_(2)rarrSO_(4)^(2-)+4H_(2)O` (B) `Cl_(2)+H_(2)O_(2) ... 2)` acts as reductant in reaction (A) and oxidant in reactin (B)

Which one among the following statements regarding the constitutionally guaranteed Right to Education in India is correct? (1) This right covers both child and adult illiteracy and therefore, universally guarantees education to all citizens of India (2) This right is a child right covering the age group of 6 to 14 years and becomes operational from the year 2015 (3) This right has been taken from the British Constitution which was the first Welfare State in the world (4) This right has been given to all Indian children between the ages of 6 to 14 years under the 86th Constitutional Amendment Act

Description : Which one among the following statements regarding the constitutionally guaranteed Right to Education in India is correct? (1) This right covers both child and adult illiteracy and therefore, universally ... children between the ages of 6 to 14 years under the 86th Constitutional Amendment Act

Last Answer : (4) This right has been given to all Indian children between the ages of 6 to 14 years under the 86th Constitutional Amendment Act Explanation: The 86th amendment to the Constitution approved ... notified. It included Article 21(1) in the Indian constitution making education a fundamental right.

Which one of the following statements concerning elements in the Periodic Table is correct? A Elements of the same group all have the same number of electrons in the outermost occupied electron shell. B Elements of Group 16 occur as cations in ionic compounds. C Oxides of elements in Groups 16 and 17 are basic. D The halogens (Group 17) are all gases at room temperature. E The Group 13 elements are all metals.

Description : Which one of the following statements concerning elements in the Periodic Table is correct? A Elements of the same group all have the same number of electrons in the outermost occupied electron shell. B ... (Group 17) are all gases at room temperature. E The Group 13 elements are all metals.

Last Answer : D) Are compounds that exhibit both metallic & non-metallic properties to some extent and are exemplified by elements like germanium, silicon & boron

`DeltaH_"vaporisation"` (KJ/mol) are given for the hydrides of halogens in the following graph. The hydride HF will correspond to

Description : `DeltaH_"vaporisation"` (KJ/mol) are given for the hydrides of halogens in the following graph. The hydride HF will correspond to

Last Answer : `DeltaH_"vaporisation"` (KJ/mol) are given for the hydrides of halogens in the following graph. The hydride HF will ... . (B)Q C. (C)R D. (D)S

Which of the following halogen hydrides will have the weakest conjugate base?

Description : Which of the following halogen hydrides will have the weakest conjugate base?

Last Answer : Which of the following halogen hydrides will have the weakest conjugate base? A. (A)HF B. (B)HCI C. (C)HBr D. (D)HI

Asseration: The thermal stability of hydrides of oxygen family decrease with molecular weight. Reason: The decomposition of `M-H` bond requires lesser

Description : Asseration: The thermal stability of hydrides of oxygen family decrease with molecular weight. Reason: The decomposition of `M-H` bond requires lesser

Last Answer : Asseration: The thermal stability of hydrides of oxygen family decrease with molecular weight. Reason: The decomposition ... in `O-H` than `S-H`.

The most acidic and most thermally stable set of chalcogen hydrides are respectively:

Description : The most acidic and most thermally stable set of chalcogen hydrides are respectively:

Last Answer : The most acidic and most thermally stable set of chalcogen hydrides are respectively: A. `H_(2)O,H_(2)s` B. `H_(2) ... )O,H_(2)Te` D. `H_(2)S,H_(2)Te`

What is covalent hydrides?

Description : What is covalent hydrides?

Last Answer : Covalent hydrides are all the other compounds of hydrogen wher hydrogen is covalently bonded- typiccally sharing an electron pair as in CH4 (methane) which could be called carbon tetrahydride ... valence electronsand hydrogen forms negative ion gaining that electron in order to complete its shell.

What is covalent hydrides?

Description : What is covalent hydrides?

Last Answer : Covalent hydrides are all the other compounds of hydrogen wher hydrogen is covalently bonded- typiccally sharing an electron pair as in CH4 (methane) which could be called carbon tetrahydride ... valence electronsand hydrogen forms negative ion gaining that electron in order to complete its shell.

What are hydrides of boron called ?

Description : What are hydrides of boron called ?

Last Answer : Boranes

What accounts for the formation of Boron Hydrides?

Description : What accounts for the formation of Boron Hydrides?

Last Answer : Ans. Because of small size of both B & H forms stable compound called Boron Hydrides.

Assign the reason for the following: (a) Enthalpy of fusion of water is higher as compared to the hydrides of Sulphur & Selenium. (b) Water is quite stable and does not dissociate in to its elements even at high temperature.

Description : Assign the reason for the following: (a) Enthalpy of fusion of water is higher as compared to the hydrides of Sulphur & Selenium. (b) Water is quite stable and does not dissociate in to its elements even at high temperature.

Last Answer : Ans-a) Due hydrogen bond it has high latent heat of fusion b) Water is a stable compound and its decomposition is not thermodynamically feasible

Give two examples of Interstitial Hydrides.

Description : Give two examples of Interstitial Hydrides.

Last Answer : Ans-Transition metal hydrides are called Interstitial Hydrides T1 H1.8& T1H2 (non –stoichiometric hydrides)

what do you understand by “Non stoichiometric hydrides”? Do you think this type of hydrides to be formed by alkali metals? Justify your answer.

Description : what do you understand by “Non stoichiometric hydrides”? Do you think this type of hydrides to be formed by alkali metals? Justify your answer.

Last Answer : Ans: Hydrides which are deficient in hydrogen and in which the ratio of hydrogen to metal is fractional are called non-stoichiometric hydrides. This type of hydrides are formed by d-and ... they form only stoichiometric hydrides. In other words alkali metals do not form non-stoichiometric hydrides.

Give two examples of Interstitial Hydrides.

Description : Give two examples of Interstitial Hydrides.

Last Answer : Ans-Transition metal hydrides are called Interstitial Hydrides T1 H1.8& T1H2(non –stoichiometric hydrides)

Name the classes of Hydrides to which H2O, B2H6 & NaH belong

Description : Name the classes of Hydrides to which H2O, B2H6 & NaH belong

Last Answer : Ans. H2O—Covalent B2H6- Covalent NaH- Ionic

What do you understand by (1) electron-deficient,(ii) electron-précise and (iii) electron precise hydrides. Provide justification with suitable examples

Description : What do you understand by (1) electron-deficient,(ii) electron-précise and (iii) electron precise hydrides. Provide justification with suitable examples

Last Answer : Ans: Electron-deficient: the hydrides which contain less than eight electron in their outmost shell are called electron- deficient for exam B2H6 Electron- precise: These hydrides contain exact number of ... nomal covalent bond and are called as electron rich hydrides. For example NH3,PH3,H2O,H2S.

Give one example of electron deficient Hydrides.

Description : Give one example of electron deficient Hydrides.

Last Answer : Ans.BH3

Consider the following statements, I. S-S bond is present in `H_(2)S_(2)O_(6).` II. In peroxodisulphuric acid `(H_(2)S_(2)O_(8))`, sulphur is in `+6`

Description : Consider the following statements, I. S-S bond is present in `H_(2)S_(2)O_(6).` II. In peroxodisulphuric acid `(H_(2)S_(2)O_(8))`, sulphur is in `+6`

Last Answer : Consider the following statements, I. S-S bond is present in `H_(2)S_(2)O_(6).` II. In ... in `+6` oxidation state. The correct set of statement is

Which of the following statements are correct for `H_(2)O_(2)` ?

Description : Which of the following statements are correct for `H_(2)O_(2)` ?

Last Answer : Which of the following statements are correct for `H_(2)O_(2)` ? A. it is neutral towards ... )` is produced by auto oxidation of 2-ethyl anthraquinol

Which of the following statements are correct for `H_(2)O_(2)` ?

Description : Which of the following statements are correct for `H_(2)O_(2)` ?

Last Answer : Which of the following statements are correct for `H_(2)O_(2)` ? A. it is neutral towards ... )` is produced by auto oxidation of 2-ethyl anthraquinol

`H_(2)C_(2)O_(4)` and `NaHC_(2)O_(4)` behave as acids as well as reducing agents. Which are the correct statements?

Description : `H_(2)C_(2)O_(4)` and `NaHC_(2)O_(4)` behave as acids as well as reducing agents. Which are the correct statements?

Last Answer : `H_(2)C_(2)O_(4)` and `NaHC_(2)O_(4)` behave as acids as well as reducing agents. Which are the ... is oxidised by same volume of 1 (M) `KMnO_(4)`

A 65-year-old is interested in taking ginkgo. Which of the following statements is correct regarding ginkgo? (a) Ginkgo is contraindicated in diabetes and pregnancy (b) There is a drug-herb interaction between ginkgo and aspirin (c) Toxic effects include hypertension and cardiac arrest (d) There is a drug-herb interaction between ginkgo and phenelzine (e) Ginkgo is contraindicated in patients with gallstone pain

Description : A 65-year-old is interested in taking ginkgo. Which of the following statements is correct regarding ginkgo? (a) Ginkgo is contraindicated in diabetes and pregnancy (b) There is a ... drug-herb interaction between ginkgo and phenelzine (e) Ginkgo is contraindicated in patients with gallstone pain

Last Answer : Ans: B

An alkene (A) `C_(16)H_(16)` on ozonolysis gives only one product (B) `C_8H_8O`. Compound (B) on reaction with NaOH/`I_(2)` yeilds sodium benzoate. Co

Description : An alkene (A) `C_(16)H_(16)` on ozonolysis gives only one product (B) `C_8H_8O`. Compound (B) on reaction with NaOH/`I_(2)` yeilds sodium benzoate. Co

Last Answer : An alkene (A) `C_(16)H_(16)` on ozonolysis gives only one product (B) `C_8H_8O`. Compound (B) ... `(H_(2)//Pd-C)` gives a racemic mixture

An alkene (A) `C_(16)H_(16)` on ozonolysis gives only one product (B) `C_8H_8O`. Compound (B) on reaction with NaOH/`I_(2)` yeilds sodium benzoate. Co

Description : An alkene (A) `C_(16)H_(16)` on ozonolysis gives only one product (B) `C_8H_8O`. Compound (B) on reaction with NaOH/`I_(2)` yeilds sodium benzoate. Co

Last Answer : An alkene (A) `C_(16)H_(16)` on ozonolysis gives only one product (B) `C_8H_8O`. Compound (B) ... `(H_(2)//Pd-C)` gives a racemic mixture

Regarding the National Flag choose the correct options from the following statements i) It has a horizontal strip of three colours including deep saffron at the top, white in the middle, and dark green at the bottom. ii) The ratio of the flag width to its length is 2:3 -Science

Description : Regarding the National Flag choose the correct options from the following statements i) It has a horizontal strip of three colours including deep saffron at the top, white in the middle, and dark green at the bottom. ii) The ratio of the flag width to its length is 2:3 -Science

Last Answer : Both i and ii The National Flag of India has a horizontal strip of three colours including deep saffron (Kesaria) at the top, white in the middle, and dark green at the bottom. The ratio of the flag width to its length is 2:3.

Which of the following statements is correct regarding menstural cycle

Description : Which of the following statements is correct regarding menstural cycle

Last Answer : Which of the following statements is correct regarding menstural cycle A. LH induces rupturing of ... FSH attain a peak level in secretory phase

Which of the following statements (regarding an atom of H ) are correct?

Description : Which of the following statements (regarding an atom of H ) are correct?

Last Answer : Which of the following statements (regarding an atom of H ) are correct? A. Kinetic energy ... orbit D. Various energy levels are equally spaced

Which of the following statements regarding adsorption is/are correct?

Description : Which of the following statements regarding adsorption is/are correct?

Last Answer : Which of the following statements regarding adsorption is/are correct? A. Extent of adsorption ... adsorption is dependent on the nature of adsorbent

The correct statements regarding ozone is/are

Description : The correct statements regarding ozone is/are

Last Answer : The correct statements regarding ozone is/are A. Ozone is thermodynamically less stable with respect to oxygen B. ... (2(g))` D. It is toxic substance

The correct statements regarding ozone is/are

Description : The correct statements regarding ozone is/are

Last Answer : The correct statements regarding ozone is/are A. Ozone is thermodynamically less stable with respect to oxygen B. ... (2(g))` D. It is toxic substance

Which of the following statements regarding cilia is not correct

Description : Which of the following statements regarding cilia is not correct

Last Answer : Which of the following statements regarding cilia is not correct A. Cilia contain an outer of ... D. Microtubules of cilia are composed of tubulin.

Which of the following statements regarding mitochondrial membrane is NOT correct ?

Description : Which of the following statements regarding mitochondrial membrane is NOT correct ?

Last Answer : Which of the following statements regarding mitochondrial membrane is NOT correct ? A. The ... highly convoluted forming a series of infoldings.

Study the following statements regarding food chains and select the correct ones. (i) Removal of 80% tigers from an area resulted in greatly increased

Description : Study the following statements regarding food chains and select the correct ones. (i) Removal of 80% tigers from an area resulted in greatly increased

Last Answer : Study the following statements regarding food chains and select the correct ones. (i) Removal of 80% tigers from an area ... . a, b C. b, c D. c, d

Which of the following statements regarding the resonance energy of benzene is correct?

Description : Which of the following statements regarding the resonance energy of benzene is correct?

Last Answer : Which of the following statements regarding the resonance energy of benzene is correct? A. The energy ... of benzene D. The energy required to convert