Assertion :- Metallic character increases on going down the group Reason :- I.E. decreases on going down the group

Assertion :- Metallic character increases on going down the group Reason :- I.E. decreases on going down the group
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Assertion :- Metallic character increases on going down the group Reason :- I.E. decreases on going ... . D. If both Assertion & Reason are false
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Assertion :- Entropy of system increases for a spontaneous reactions. Reason :- Enthalpy of reaction always decreases for spontaneous reaction.

Description : Assertion :- Entropy of system increases for a spontaneous reactions. Reason :- Enthalpy of reaction always decreases for spontaneous reaction.

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Assertion :- In a redox reaction, the oxidation number of the oxidant decreases while that of reductant increases. Reason :- Oxidant gains electron(s)

Description : Assertion :- In a redox reaction, the oxidation number of the oxidant decreases while that of reductant increases. Reason :- Oxidant gains electron(s)

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On going down in a group in the periodic table, the metallic nature of element

Description : On going down in a group in the periodic table, the metallic nature of element

Last Answer : increases.

Non-metallic character increases from (1) Magnesium to Barium (2) Potassium to Cesium (3) Oxygen to Selenium (4) Sodium to Chlorine

Description : Non-metallic character increases from (1) Magnesium to Barium (2) Potassium to Cesium (3) Oxygen to Selenium (4) Sodium to Chlorine

Last Answer : (4) Sodium to Chlorine Explanation: The elements which lose electrons to form cations are known as metals. Metallic character decreases across a period as we move from left to right.

With increase in temperature, the thermal conductivity of non-metallic amorphous solids (A) Decreases (B) Increases (C) Remain constant (D) First decreases upto certain temperature and then increases

Description : With increase in temperature, the thermal conductivity of non-metallic amorphous solids (A) Decreases (B) Increases (C) Remain constant (D) First decreases upto certain temperature and then increases

Last Answer : (B) Increases

Pick out the wrong statement. (A) The emissivity of a surface decreases, if it gets corroded by atmospheric environment (B) The emissivity of a surface increases with increase in surface roughness (C) The emissivity of a polished surface is quite low (D) The emissivity of a non-metallic surface decreases with increase in the temperature

Description : Pick out the wrong statement. (A) The emissivity of a surface decreases, if it gets corroded by atmospheric environment (B) The emissivity of a surface increases with increase in surface roughness ... quite low (D) The emissivity of a non-metallic surface decreases with increase in the temperature

Last Answer : (A) The emissivity of a surface decreases, if it gets corroded by atmospheric environment

If a metallic object is heated, its density generally: w) increases x) decreases y) fluctuates randomly z) remains the same

Description : If a metallic object is heated, its density generally: w) increases x) decreases y) fluctuates randomly z) remains the same

Last Answer : ANSWER: X -- DECREASES

Assertion: Phenol is more reactive than benzene towards electrophilic reactions. Reason : The +R effect of OH group increases the electron density on

Description : Assertion: Phenol is more reactive than benzene towards electrophilic reactions. Reason : The +R effect of OH group increases the electron density on

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Choose the correct statement. (a) Electronegativity increases down a group (b) Electronegativity decreases down a group (c) Electronegativity decreases from left to right along a period (d) Electronegativity changes along a group, but remains constant along a period

Description : Choose the correct statement. (a) Electronegativity increases down a group (b) Electronegativity decreases down a group (c) Electronegativity decreases from left to right along a period (d) Electronegativity changes along a group, but remains constant along a period

Last Answer : Ans:(b)

The solubility of the alkali metal carbonates (a) Decreases as we go down the group (b) Increases as we go down the group (c) Increases at first and then decreases (d) Does not show regular variation

Description : The solubility of the alkali metal carbonates (a) Decreases as we go down the group (b) Increases as we go down the group (c) Increases at first and then decreases (d) Does not show regular variation

Last Answer : Ans:(b)

Give reason for the following observation (L-III) (a)- The tendency for catenation decreases down the group in group 14 (b)- The decreasing stability of+3 oxidation state with increasing atomic no. in group 13. (c)- Molten aluminum bromide is a poor conductor of electricity.

Description : Give reason for the following observation (L-III) (a)- The tendency for catenation decreases down the group in group 14 (b)- The decreasing stability of+3 oxidation state with increasing atomic no. in group 13. (c)- Molten aluminum bromide is a poor conductor of electricity.

Last Answer : Ans. -(a) it is due to decrease in bond dissociation energy which is due to increase in atomic size C-C > Si-Si >Ge-Ge>Sn-Sn>Pb-Pb. (b)- It is due to inert pair effect. (c)- Molten AlBr3 is poor conductor of electricity because it is covalent compound.

Assertion (A) : Mass media promote a culture of violence in the society. Reason (R) : Because violence sells in the market as people themselves are violent in character. (A) Both (A) and (R) are true and (R) is the correct explanation of (A). (B) Both (A) and (R) are true, but (R) is not the correct explanation of (A). (C) (A) is true, but (R) is false. (D) Both (A) and (R) are false.

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Last Answer : (D) Both (A) and (R) are false.

Assertion: Diversity observed in the entire geographical area is called gamma diversity. Reason: Biodiversity decreases from high altitude to low alti

Description : Assertion: Diversity observed in the entire geographical area is called gamma diversity. Reason: Biodiversity decreases from high altitude to low alti

Last Answer : Assertion: Diversity observed in the entire geographical area is called gamma diversity. Reason: ... If both assertion and reason are false.

Assertion `:-` Emphysema is a chornnic disorder in which alveolar walls are damaged due to which respiratory surface decreases. Reason `:-` One of the

Description : Assertion `:-` Emphysema is a chornnic disorder in which alveolar walls are damaged due to which respiratory surface decreases. Reason `:-` One of the

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Assertion `:-` While ascending up a mountain , one gets less oxygen resulting in hypoxia. Reason `:-` Percentage of oxygen decreases in the air at hig

Description : Assertion `:-` While ascending up a mountain , one gets less oxygen resulting in hypoxia. Reason `:-` Percentage of oxygen decreases in the air at hig

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Assertion : Nucleocytoplasmic ratio decreases in cleavage . Reason : During cleavage , cytoplasmic synthesis is faster than DNA synthesis.

Description : Assertion : Nucleocytoplasmic ratio decreases in cleavage . Reason : During cleavage , cytoplasmic synthesis is faster than DNA synthesis.

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Assertion: ADH reduces chloride loss in Urine. Reason: ADH decreases water absorption.

Description : Assertion: ADH reduces chloride loss in Urine. Reason: ADH decreases water absorption.

Last Answer : Assertion: ADH reduces chloride loss in Urine. Reason: ADH decreases water absorption. A. If both ... false D. If both Assertion and Reason are false

How does metallic nature vary along a period and down a group?

Description : How does metallic nature vary along a period and down a group?

Last Answer : Metallic nature decreases along a period and increases down the group. Example: In the 14 th group there are elements carbon, silicon, germanium, tin and lead. Carbon and silicon are non-metals, tin and leads are metals.

Assertion `:-` Antidiuretic hormone, increases the water permeability of distal convoluted tubule. Reason `:-` In the absence of ADH, water re-absorpt

Description : Assertion `:-` Antidiuretic hormone, increases the water permeability of distal convoluted tubule. Reason `:-` In the absence of ADH, water re-absorpt

Last Answer : Assertion `:-` Antidiuretic hormone, increases the water permeability of distal convoluted tubule. Reason ... . If both Assertion & Reason are false.

Assertion `:` Generally old people have hiher blood pressure. Reason `:` Arterial diameter increases with Age.

Description : Assertion `:` Generally old people have hiher blood pressure. Reason `:` Arterial diameter increases with Age.

Last Answer : Assertion `:` Generally old people have hiher blood pressure. Reason `:` Arterial diameter increases with ... D. If both Assertion & Reason are false.

Assertion `:-` Strong pneumotoxic signal results complete filling of lungs. Reason `:-` Strong pneumotaxic singla increases the duration of inspiratio

Description : Assertion `:-` Strong pneumotoxic signal results complete filling of lungs. Reason `:-` Strong pneumotaxic singla increases the duration of inspiratio

Last Answer : Assertion `:-` Strong pneumotoxic signal results complete filling of lungs. Reason `:-` Strong ... D. If both Assertion & Reason are false.

Assertion :- In an isolated system the entropy increases due to spontanous process. Reason :- The processes in an isolated system are adiabatic.

Description : Assertion :- In an isolated system the entropy increases due to spontanous process. Reason :- The processes in an isolated system are adiabatic.

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Assertion :- When a rubber band is stretched entropy increases. Reason :- During expansion entropy increases.

Description : Assertion :- When a rubber band is stretched entropy increases. Reason :- During expansion entropy increases.

Last Answer : Assertion :- When a rubber band is stretched entropy increases. Reason :- During expansion entropy ... D. If both Assertion & Reason are false.

Assertion: Sewage discharge in a water body causes eutrophication. Reason: This increases the organic content in water body and, hence, the growth of

Description : Assertion: Sewage discharge in a water body causes eutrophication. Reason: This increases the organic content in water body and, hence, the growth of

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Assertion : Thyroxine shows calorigenic effect. Reason : Thyroxine shows calorigenic effect. Reason : Thyroxine increases catabolism, produces energy

Description : Assertion : Thyroxine shows calorigenic effect. Reason : Thyroxine shows calorigenic effect. Reason : Thyroxine increases catabolism, produces energy

Last Answer : Assertion : Thyroxine shows calorigenic effect. Reason : Thyroxine shows calorigenic effect. Reason : ... If both Assertion and Reason are false.

Assertion (A): The development of agriculture and industry leads to the development of tertiary sector. Reason (R): As the agriculture and industrial sectors develop, the demand for storage, transport, banking, insurance, etc, increases. (a) Both A & R are true and R is the correct explanation of A (b) Both A & R are true but R is not the correct explanation of A. (c) A is true but R is false. (d) Both A & R are false.

Description : Assertion (A): The development of agriculture and industry leads to the development of tertiary sector. Reason (R): As the agriculture and industrial sectors develop, the demand for storage, transport, banking, insurance, etc, increases ... A. (c) A is true but R is false. (d) Both A & R are false.

Last Answer : (a) Both A & R are true and R is the correct explanation of A

When light passes from air into water, the frequency of the light remains the same. What happens to the speed? And the wavelength of light as it crosses the boundary in going from air into water? Speed Wavelength A. Increases Remains the same B. Remains the same Decreases C. Remains the same remains the same D. Decreases Increases E. Decreases Decreases

Description : When light passes from air into water, the frequency of the light remains the same. What happens to the speed? And the wavelength of light as it crosses the boundary in going from air into ... same Decreases C. Remains the same remains the same D. Decreases Increases E. Decreases Decreases

Last Answer : E. Decreases Decreases

Consider the elements B, Al, Mg and K predict the correct order of metallic character :

Description : Consider the elements B, Al, Mg and K predict the correct order of metallic character :

Last Answer : Consider the elements B, Al, Mg and K predict the correct order of metallic character : a. B > Al > Mg > K b. ... Al > K > B d. K > Mg > Al > B

In what general region of the periodic table is metallic character the greatest?

Description : In what general region of the periodic table is metallic character the greatest?

Last Answer : Need answer

Elecronegativity is the measure of - (1) Metallic character (2) Non-metallic character (3) Basic Character (4) None of these

Description : Elecronegativity is the measure of - (1) Metallic character (2) Non-metallic character (3) Basic Character (4) None of these

Last Answer : (2) Non-metallic character Explanation: Electronegativity cannot be directly measured and must be calculated from other atomic or molecular properties. Several methods of calculation have been proposed, ... values of the electro negativity, all methods show the same periodic trends between elements.

Which halogen is highly metallic in character?

Description : Which halogen is highly metallic in character?

Last Answer : Astatine

Non - metal shows metallic character?

Description : Non - metal shows metallic character?

Last Answer : Hydrogen

Arrange the following elements in increasing order of metallic character: B, Al, Mg and K.

Description : Arrange the following elements in increasing order of metallic character: B, Al, Mg and K.

Last Answer : Ans. The correct order is: B

Explain the term (a). Screening effect (b). Penetration effect (c). Metallic character

Description : Explain the term (a). Screening effect (b). Penetration effect (c). Metallic character

Last Answer : Ans. (a).Screening effect. The inner electrons between valence electron and nucleus shield the valence electrons from nucleus; it is called shielding effect. (b). Penetration effect. Due to ... ionization energy more will be the tendency to lose electron, higher will be the metallic character.

Severe back pain ? Severe pain about three inches above the end of the spine in the middle of the two buttocks behind the waist. It is due to G. I want to know the reason. Sometimes it decreases and sometimes it increases. Note that I am 23 years old.

Description : Severe back pain ? Severe pain about three inches above the end of the spine in the middle of the two buttocks behind the waist. It is due to G. I want to know the reason. Sometimes it decreases and sometimes it increases. Note that I am 23 years old.

Last Answer : You may have some reasons for the problem, but I think there is one reason. This means that there is a slight increase in bone growth from the bone at the end of your waist, that is, at the end of ... one place or one place for a long time. Eat foods rich in nutritious vitamins . Thanks.

The reason why a catalyst increases the rate of reaction is that, it (A) Decreases the energy barrier for reaction (B) Increases the activation energy (C) Decreases the molecular collision diameter (D) None of these

Description : The reason why a catalyst increases the rate of reaction is that, it (A) Decreases the energy barrier for reaction (B) Increases the activation energy (C) Decreases the molecular collision diameter (D) None of these

Last Answer : (A) Decreases the energy barrier for reaction

What is the best reason to implement a security policy? A. It increases security. B. It makes security harder to enforce. C. It removes the employee’s responsibility to make judgments. D. It decreases security.

Description : What is the best reason to implement a security policy? A. It increases security. B. It makes security harder to enforce. C. It removes the employee’s responsibility to make judgments. D. It decreases security.

Last Answer : C. It removes the employee’s responsibility to make judgments.

Assertion `(A):` `._(92)U^(238) (IIIB)overset(-alpha)rarrAoverset(-alpha)rarrB overset(-beta)rarrC` Reason `(R):` Element `B` will be of `II A ` group

Description : Assertion `(A):` `._(92)U^(238) (IIIB)overset(-alpha)rarrAoverset(-alpha)rarrB overset(-beta)rarrC` Reason `(R):` Element `B` will be of `II A ` group

Last Answer : Assertion `(A):` `._(92)U^(238) (IIIB)overset(-alpha)rarrAoverset(-alpha)rarrB overset(-beta)rarrC` Reason ... D. If both (A) and (R ) are incorrect.

Assertion(A): Ethyl alcohol is soluble in organic solvents Reason (R): Ethyl alcohol is having non polar ethyl group

Description : Assertion(A): Ethyl alcohol is soluble in organic solvents Reason (R): Ethyl alcohol is having non polar ethyl group

Last Answer : Assertion(A): Ethyl alcohol is soluble in organic solvents Reason (R): Ethyl alcohol is having non polar ... is false D. A is false but R is true

Assertion : During embrynic stage testes descend down and at the time of birth , it comes into scrotum . Reason : Spermatogenesis process requires les

Description : Assertion : During embrynic stage testes descend down and at the time of birth , it comes into scrotum . Reason : Spermatogenesis process requires les

Last Answer : Assertion : During embrynic stage testes descend down and at the time of birth , it comes into scrotum ... . D. If both Assertion & Reason are False.

Referring to the periodic table of elements, it is found that with increasing atomic number. The atomic size in the same (A) Period increases (B) Period decreases (C) Group increases (D) Both 'b' & 'c'

Description : Referring to the periodic table of elements, it is found that with increasing atomic number. The atomic size in the same (A) Period increases (B) Period decreases (C) Group increases (D) Both 'b' & 'c'

Last Answer : Option D

In general, as you move down a family the ionization energy: w) increases x) decreases y) remains the same z) increases or decreases

Description : In general, as you move down a family the ionization energy: w) increases x) decreases y) remains the same z) increases or decreases

Last Answer : ANSWER: X -- DECREASES

As you go down into a well, your weight: w) increases slightly x) decreases slightly y) remains exactly the same

Description : As you go down into a well, your weight: w) increases slightly x) decreases slightly y) remains exactly the same

Last Answer : ANSWER: X -- DECREASES SLIGHTLY

How many of the following properties of halogen Increases with increase In atomic number. (a) Number of valence electron (b) Metallic nature (c) Boili

Description : How many of the following properties of halogen Increases with increase In atomic number. (a) Number of valence electron (b) Metallic nature (c) Boili

Last Answer : How many of the following properties of halogen Increases with increase In atomic number. (a) Number of ... . (j) `Delta_"eg"H` (magnitude wise)

Indicate the false statement about the resistance of a wire – (1) it depends on material of wire (2) it is directly proportional to the length of wire (3) it is directly proportional to the area of crosssection of wire (4) resistance of metallic wire increases with increase in temperature

Description : Indicate the false statement about the resistance of a wire – (1) it depends on material of wire (2) it is directly proportional to the length of wire (3) it is directly proportional to the area of crosssection of wire (4) resistance of metallic wire increases with increase in temperature

Last Answer : (3) it is directly proportional to the area of cross-section of wire Explanation: The property of conductor due to which it opposes the flow of current through it is called Resistance. It is ... potential difference across its ends to the current flowing through it The SI unit of resistance is ohm.

The resistance of electric wire will decrease as its _______________. A. length increases B. cross-sectional area increases C. temperature increases D. percent of metallic purities increases

Description : The resistance of electric wire will decrease as its _______________. A. length increases B. cross-sectional area increases C. temperature increases D. percent of metallic purities increases

Last Answer : Answer: B

Indicate the false statement about the resistance of a wire (1) it depends on material of wire (2) it is directly proportional to the length of wire (3) it is directly proportional to the area of cross-section of wire (4) resistance of metallic wire increases with increase in temperature

Description : Indicate the false statement about the resistance of a wire (1) it depends on material of wire (2) it is directly proportional to the length of wire (3) it is directly proportional to the area of cross-section of wire (4) resistance of metallic wire increases with increase in temperature

Last Answer :  it is directly proportional to the area of cross-section of wire

1The elements of the second period of the Periodic Table are given below: Li Be B C N O F (a) Give reason to explain why atomic radii decrease from Li to F. (b) Identify the most (i) metallic and (ii)non-metallic element. -Science

Description : 1The elements of the second period of the Periodic Table are given below: Li Be B C N O F (a) Give reason to explain why atomic radii decrease from Li to F. (b) Identify the most (i) metallic and (ii)non-metallic element. -Science

Last Answer : a) It is because nuclear charge increases due to increase in atomic number, therefore, force of attraction between nucleus and valence electrons increases, i.e. effective nuclear charge increases, hence ... element is ‘F’ because it can gain electrons easily due to smallest atomic size.

Give reason: Metallic articles which are exposed to air over long period of time lose their lustre.

Description : Give reason: Metallic articles which are exposed to air over long period of time lose their lustre.

Last Answer : Due to the formation of oxide, hydroxide and carbonate layers.

Name non-metal of Boron Family .What is the reason for its non-metallic behavior?

Description : Name non-metal of Boron Family .What is the reason for its non-metallic behavior?

Last Answer : Ans Boron. Because of its small size ,high ionization enthalpy and comparatively high electronegativity.