Description : Fluorine does not exhibit variable oxidation states due to
Last Answer : Fluorine does not exhibit variable oxidation states due to A. small size B. more electronegativity C. less density D. lack of vacent d orbitals
Description : The catalytic activity of transition metals and their compounds is ascribed mainly to (1) their chemical reactivity (2) their magnetic behaviour (3) their unfilled d-orbitals (4) their ability to adopt variable oxidation states
Last Answer : (4) their ability to adopt variable oxidation states
Description : Which element of group V A shows maximum oxidation states ?
Last Answer : Which element of group V A shows maximum oxidation states ? A. bismuth B. phosphorus C. nitrogen D. arsenic
Description : What is the basic element of a language? a) Literal b) Variable c) Random variable d) All of the mentioned
Last Answer : c) Random variable
Description : Vane anemometer (A) Is an area meter (B) Is a variable head meter (C) Rotates an element at a speed determined by the velocity of the fluid inwhich the meter is immersed (D) None of these
Last Answer : (C) Rotates an element at a speed determined by the velocity of the fluid inwhich the meter is immersed
Description : The mechanism which changes the value of manipulated variable in response to the output signal from the control unit is called the (A) Final control element (B) On-off control (C) Floating control action (D) None of these
Last Answer : Option A
Description : Price is the only element in the marketing mix that produces: A. Fixed cost B. Expense C. Variable cost D Revenue
Last Answer : D Revenue
Description : Which is an element which never exhibits positive oxidation state in any of its compounds? -Do You Know?
Last Answer : answer:
Description : What is the oxidation number of free element ?
Last Answer : The oxidation number of free element is 0 .
Description : If an element is in its lowest oxidation state, under proper conditions it can act as :
Last Answer : If an element is in its lowest oxidation state, under proper conditions it can act as : ... as reducing agent D. Neither oxidising nor reducing agent
Description : Positive oxidation state of an element indicates that it is -
Last Answer : Positive oxidation state of an element indicates that it is - A. Is in elementry form B. Oxidised C. Reduced D. Does not changed.
Description : An element `A` in a compound `ABD` has oxidation number `A^(n-)`. It is oxidised by `Cr_(2)O_(7)^(2-)` in acid medium. In the experiment `1.68xx10^(-3
Last Answer : An element `A` in a compound `ABD` has oxidation number `A^(n-)`. It is oxidised by `Cr_(2)O_(7)^(2-)` in acid ... is: A. 3 B. 3-n C. n-3 D. `+n`
Description : In which of the following cases, the element is oxidised into its highest oxidation state when it reacted with ozone under moist condition.
Last Answer : In which of the following cases, the element is oxidised into its highest oxidation state when it reacted with ozone under ... S B. `I_(2)` C. P D. As
Description : In the above chemical reaction which element does undergo oxidation and which does undergo reduction?
Last Answer : 2Na(s) + H2(g) \(\overset{\Delta}\longrightarrow\) 2NaH(s) In the above ... element does undergo oxidation and which does undergo reduction?
Description : What determine the most likely oxidation state of an element?
Last Answer : the number of electrons the element needs to lose or gain tohave a full valence shell
Description : What is the element in third series the element with maximum oxidation state ?
Last Answer : Mn – manganese -+7-oxidation state
Description : Nichrome wire is used as a heating element I many appliances because (a) it can be drawn out into wires easily (b) it has high resistivity (c) it resists oxidation in air when red hot (d) both (b) and (c) are correct
Last Answer : Ans:(d)
Description : When water itself combines chemically with some element or mineral it is called – (1) Carbonation (2) Desilication (3) Hydration (4) Oxidation
Last Answer : (3) Hydration Explanation: When water combines chemically with other elements, the process is called hydration. In organic chemistry, a hydration reaction is a chemical reaction in which a hydroxyl ... runs in a strong acidic, aqueous solution. Hydration leaves the non-water component intact.
Description : Which is an element which never exhibits positive oxidation state in any of its compounds?
Last Answer : Fluorine
Description : Which element of Boron Family is used to prevent oxidation?
Last Answer : Ans.Aluminum
Description : A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number? (1) C (2) S (3) H (4) Cl
Last Answer : Cl
Description : When water itself combines chemically with some element or mineral it is called (1) Carbonation (2) Desilication (3) Hydration (4) Oxidation
Last Answer : Hydration
Description : Thallium(Tl) Show +1 stable oxidation state due to because
Last Answer : Thallium(Tl) Show +1 stable oxidation state due to because A. Of high reactivity B. Of inert ... its amphoteric nature D. It is a transition metal
Description : Assertion : In the reaction, `(1)/(2)O_(2)+F_(2)rarrOF_(2)` Fluorine is oxidant. Reason :- Fluorine cannot show positive oxidation state.
Last Answer : Assertion : In the reaction, `(1)/(2)O_(2)+F_(2)rarrOF_(2)` Fluorine is oxidant. Reason :- ... is False. D. If both Assertion & Reason are False.
Description : The law of diminishing (marginal) returns states that as more of a variable factor is added to a certain amount of a fixed factor, beyond some point: a. Total physical product begins ... The marginal physical product rises c. The marginal physical product falls d. The average physical product falls
Last Answer : c. The marginal physical product falls
Description : Two oxidation states for chlorine are found in the compound :
Last Answer : Two oxidation states for chlorine are found in the compound : A. `CaOCl_(2)` B. `KCl` C. `KClO_(3)` D. `Cl_(2)O_(7)`
Description : What is the sum of highest and lowest oxidation states for oxygen family
Last Answer : What is the sum of highest and lowest oxidation states for oxygen family
Description : Fluorine has -1 oxidation state while iodine exhibits oxidation states of -1, +1, +3 ,+5 and +7. This is due to
Last Answer : Fluorine has -1 oxidation state while iodine exhibits oxidation states of -1, +1, +3 ,+5 and ... availability of d-orbitals in iodine D. none of above
Description : Metal carbonyls have the metal ions in zero or unusually lower oxidation states. This is because :
Last Answer : Metal carbonyls have the metal ions in zero or unusually lower oxidation states. This is because : A. ... . D. carbonyl is a strongly p-acidic ligand.
Description : The compound in which nickel has the lower oxidation states is :
Last Answer : The compound in which nickel has the lower oxidation states is : A. `Ni(CO)_(4)` B. `(CH_(3)COO)_(2)Ni` C. `NiO` D. `NiCl_(2)(PPh_(3))_(2)`
Description : Statement `N` atom has two different oxidation states in `NH_(4)NO_(2)`. Explanation One `N` atom has-`ve` oxidation number as it is attached with les
Last Answer : Statement `N` atom has two different oxidation states in `NH_(4)NO_(2)`. Explanation One `N` atom has-`ve` ... C. I, II and III D. I, II and IV
Description : The oxidation states of sulphur in the anions `SO_(3)^(2-), S_(2)O_(4)^(2-)`, and `S_(2)O_(6)^(2-)` follow the order
Last Answer : The oxidation states of sulphur in the anions `SO_(3)^(2-), S_(2)O_(4)^(2-)`, and `S_(2)O_(6)^(2-)` follow ... (6)^(2-)ltS_(2)O_(4)^(2-)ltSO_(3)^(2-)`
Description : In disulphurous acid, the oxidation states of sulphur can be:
Last Answer : In disulphurous acid, the oxidation states of sulphur can be: A. `+6` and `-2` B. `+6` and 0 C. `+5` and `+3` D. `+5` and `-2`
Description : The oxoacid of sulphur which contains two sulphur atoms in different oxidation states
Last Answer : The oxoacid of sulphur which contains two sulphur atoms in different oxidation states A. ... acid C. pyrosulphuric acid D. persulphuric acid
Description : Oxygen exhibits its `+ve` oxidation states in its
Last Answer : Oxygen exhibits its `+ve` oxidation states in its A. Fluorides B. Chlorides C. Nitrides D. Sulphides
Description : What are the oxidation states of the atoms in diatomic gas?
Last Answer : the oxidation states are always 0 for both atoms
Description : Nitrogen forms a variety of compounds in all oxidation states ranging from - (1) -3 to + 5 (2) -3 to +3 (3) -3 to + 4 (4) -3 to +6
Last Answer : (1) -3 to + 5 Explanation: Nitrogen compounds are chemical compounds containing nitrogen ions. Nitrogen forms compounds with a wide range of oxidation states that range from -3 for the ... oxidation state compounds are strong oxidizing agents. -3 oxidation state compounds are weak reducing agents.
Description : What is/are oxidation states of gallium? Give its reason also.
Last Answer : Ans:+1 and +3 ,due to inert pair effect
Description : Nitrogen forms a variety of compounds in all oxidation states ranging from (1) –3 to + 5 (2) –3 to + 3 (3) –3 to + 4 (4) –3 to + 6
Last Answer : –3 to + 5