Beryllium, the first member of the Group 2 metals, shows different behaviour as compared to magnesium and rest of the members what is this properties

Beryllium, the first member of the Group 2 metals, shows different behaviour as compared to magnesium and rest of the members what is this properties
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Ans Anomalous Behaviour
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Which of the following metals is present in chlorophyll? (1) Beryllium (2) Magnesium (3) Calcium (4) Barium

Description : Which of the following metals is present in chlorophyll? (1) Beryllium (2) Magnesium (3) Calcium (4) Barium

Last Answer : (2) Magnesium Explanation: Chlorophyll is a chlorin pigment, which is structurally similar to and produced through the same metabolic pathway as other porphyrin pigments such as heme. At the center of the chlorin ring is a magnesium ion.

Which of the following metals is present in chlorophyll? (1) Beryllium (2) Magnesium (3) Calcium (4) Barium

Description : Which of the following metals is present in chlorophyll? (1) Beryllium (2) Magnesium (3) Calcium (4) Barium

Last Answer : Magnesium

Mention the anomalous behaviour of beryllium

Description : Mention the anomalous behaviour of beryllium

Last Answer : Ans Beryllium, the first member of the Group 2 metals, shows anomalous behaviour as compared to magnesium and rest of the members i) Beryllium has exceptionally small atomic and ionic sizes and ... of beryllium, unlike the hydroxides of oother elements in the group, are amphoteric in nature.

What is the Reason for the anomalous behaviour of beryllium ?

Description : What is the Reason for the anomalous behaviour of beryllium ?

Last Answer : Ans The properties of berrylium the first member of the alkaline earth metal, differ from the rest of the member. Its is mainly because of Its small size and high polarizing power. Relatively ... energy as compared to other members. Absence of vacant d - orbitals in its valence shell.

Mention the anomalous behaviour of beryllium

Description : Mention the anomalous behaviour of beryllium

Last Answer : Beryllium, the first member of the Group 2 metals, shows anomalous behaviour as compared to magnesium and rest of the members. Further, it shows diagonal relationship to aluminium (i) Beryllium has ... of beryllium, unlike the hydroxides of other elements in the group, are  amphoteric in nature. 

Beryllium chloride, BeCl2, melts at 405°C and boils at 520°C. That compares with 714°C and 1412°C for magnesium chloride.Give reason ?

Description : Beryllium chloride, BeCl2, melts at 405°C and boils at 520°C. That compares with 714°C and 1412°C for magnesium chloride.Give reason ?

Last Answer : Ans Be forms covalent compounds

Which metal is extracted from sea water? (1) Potassium (2) Magnesium (3) Aluminium (4) Beryllium

Description : Which metal is extracted from sea water? (1) Potassium (2) Magnesium (3) Aluminium (4) Beryllium 

Last Answer : Magnesium

In an isothermal process, the internal energy of gas molecules  (a) increases  (b) decreases  (c) remains constant  (d) may increase/decrease depending on the properties of gas  (e) shows unpredictable behaviour.

Description : In an isothermal process, the internal energy of gas molecules  (a) increases  (b) decreases  (c) remains constant  (d) may increase/decrease depending on the properties of gas  (e) shows unpredictable behaviour.

Last Answer : Answer : c

Nitrogen shows anomalous behaviour in the group. Why?

Description : Nitrogen shows anomalous behaviour in the group. Why?

Last Answer : Ans: i) Small size ii) High electro negativity iii) Absence of vacant d-orbital.

Beryllium shows covalent Character in its compounds ,Why?

Description : Beryllium shows covalent Character in its compounds ,Why?

Last Answer : Ans Due to the small size, high ionization energy, and high sublimation energy of beryllium, its lattice and hydration energies are insufficient to provide complete charge separation and the ... compounds therefore, even BeO and BeF2, there is substantial covalent character in the bonding.

with which element Beryllium shows diagonal relation ship?

Description : with which element Beryllium shows diagonal relation ship?

Last Answer : Ans : Al

Lithium and beryllium, shows similarity with which elements .

Description : Lithium and beryllium, shows similarity with which elements . 

Last Answer : Lithium shows similarities to magnesium and beryllium to aluminium in many of their properties. This type of diagonal similarity is commonly referred to as diagonal relationship in the periodic table. 

A judge has a murder case. The person who was murdered has a family member who thinks they found the murder. The family members lawyer called up a witness. The lawyer asked where the witness was on the day of the murder. The witness says ' well it was like any other Sunday morning, I got the mail, went to Jill's diner and then went home and watched cartoons for the rest of the day.' The lawyer says 'he is lying!' How does the lawyer know the witness is lying? -Riddles

Description : A judge has a murder case. The person who was murdered has a family member who thinks they found the murder. The family members lawyer called up a witness. The lawyer asked where the witness was on the ... day.' The lawyer says 'he is lying!' How does the lawyer know the witness is lying? -Riddles

Last Answer : The witness says he went to get the mail and there are no mail deliveries on sundays. Also Sunday cartoons are only in the morning so how could the witness be watching them all day?

Nitrogen differs from rest of the members on the account of various factors. Which of the following properties can be classified as anomalous properti

Description : Nitrogen differs from rest of the members on the account of various factors. Which of the following properties can be classified as anomalous properti

Last Answer : Nitrogen differs from rest of the members on the account of various factors. Which of the ... nitrogen comprises 78% by volume of the atmosphere

Nitrogen differs from rest of the members on the account of various factors. Which of the following properties can be classified as anomalous properti

Description : Nitrogen differs from rest of the members on the account of various factors. Which of the following properties can be classified as anomalous properti

Last Answer : Nitrogen differs from rest of the members on the account of various factors. Which of the ... nitrogen comprises 78% by volume of the atmosphere

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

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

Pick up the correct statement from the following: (A) The structural member subjected to compression and whose dimensions are small as compared to its length, is called a stmt (B) The vertical compression members are generally known as columns or stanchions (C) Deflection in lateral direction of a long column, is generally known as buckling (D) All the above

Description : Pick up the correct statement from the following:  (A) The structural member subjected to compression and whose dimensions are small as  compared to its length, is called a stmt  (B) The ... in lateral direction of a long column, is generally known as buckling  (D) All the above

Last Answer : (D) All the above

Magnesium and calcium are in the same group on the periodic table. Which sentence best explains why they have similar properties?

Description : Magnesium and calcium are in the same group on the periodic table. Which sentence best explains why they have similar properties?

Last Answer : C. They both have two......

Despite being a Republican State, India is a member of the Commonwealth of Nations whose head is the British Monarch. This is because - (1) this membership does not affect the sovereign nature of the Indian Republic (2) this membership only shows that the British ruled over India (3) members of the association are sovereign and independent (4) it is a symbol of the unity among the members of the association

Description : Despite being a Republican State, India is a member of the Commonwealth of Nations whose head is the British Monarch. This is because - (1) this membership does not affect the sovereign nature of the ... sovereign and independent (4) it is a symbol of the unity among the members of the association

Last Answer : (2) this membership only shows that the British ruled over India Explanation: The Commonwealth of Nations is an intergovernmental organisation of 53 member states that were mostly territories of the former British Empire. The membership only shows that the British ruled over India.

Which one of the following best defines the word “allotropes”? A Different structural forms of an element B A pair of substances that differ by H+ C Elements that possess properties intermediate between those of metals and nonmetals D Atoms of a given atomic number that have a specific number of neutrons E The different phases (solid, liquid or gas) of a substance

Description : Which one of the following best defines the word allotropes ? A Different structural forms of an element B A pair of substances that differ by H+ C Elements that possess properties intermediate between ... a specific number of neutrons E The different phases (solid, liquid or gas) of a substance

Last Answer : A Different structural forms of an element 

You are given samples of three metals. Sodium, magnesium and copper. Suggest any two activities to arrange them in order of decreasing activity. -Chemistry

Description : You are given samples of three metals. Sodium, magnesium and copper. Suggest any two activities to arrange them in order of decreasing activity. -Chemistry

Last Answer : Activity 1: Sodium reacts with cold water vigorously to form sodium hydroxide and hydrogen gas Magnesium does not react with cold water but with hot water to form magnesium ! hydroxide and hydrogen gas. Hence sodium is more reactive than magnesium.

Which one of the following metals does not form amalgam? (1) Zinc (2) Copper (3) Magnesium (4) Iron

Description : Which one of the following metals does not form amalgam? (1) Zinc (2) Copper (3) Magnesium (4) Iron

Last Answer : (4) Iron Explanation: The definition of an amalgam is a mixture of metals and mercury, which can be man-made or can be naturally occurring.

Which of the following metals is least subject to oxidation? w) silver x) gold y) magnesium z) nickel

Description : Which of the following metals is least subject to oxidation? w) silver x) gold y) magnesium z) nickel

Last Answer : ANSWER: X -- GOLD

Which one of the following metals is essential to the structure and functioning of hemoglobin? w) copper x) magnesium y) tin z) iron

Description : Which one of the following metals is essential to the structure and functioning of hemoglobin? w) copper x) magnesium y) tin z) iron

Last Answer : ANSWER: Z -- IRON

Which one of the following metals is immune to corrosion by air, water, hydrochloric acid and nitric acid; but is soluble in aqua regia? w) gold x) silver y) magnesium z) nickel

Description : Which one of the following metals is immune to corrosion by air, water, hydrochloric acid and nitric acid; but is soluble in aqua regia? w) gold x) silver y) magnesium z) nickel

Last Answer : ANSWER: W -- GOLD

Which of the following metals is a solid at room temperature, yet melts in your hand? w) gallium x) cesium y) sodium z) magnesium

Description : Which of the following metals is a solid at room temperature, yet melts in your hand? w) gallium x) cesium y) sodium z) magnesium

Last Answer : ANSWER: W -- GALLIUM

Which of the following metals melts in your hand? w) gallium x) cesium y) sodium z) magnesium

Description : Which of the following metals melts in your hand? w) gallium x) cesium y) sodium z) magnesium

Last Answer : ANSWER: W -- GALLIUM

In second gp which element shows Anomalous Behaviour ?

Description : In second gp which element shows Anomalous Behaviour ?

Last Answer : Ans Be

In what ways lithium shows similarities to magnesium in its chemical behavior?

Description : In what ways lithium shows similarities to magnesium in its chemical behavior?

Last Answer : Ans. (a) the hydroxides of both lithium and Mg decompose on heating (b) Both form ionic nitrides when heated in an atmosphere of nitrogen. (C) The carbonates of both Li and Mg decompose on heating

Pick up the correct statement from the following: (A) The object of classifying soils is to arrange them into groups according to their properties and behaviour (B) A soil classification system is meant to provide an accepted and systematic method of describing the various types of soils eliminating personal factors (C) The first category of soil classification is based on grain size of the soil (D) All the above

Description : Pick up the correct statement from the following: (A) The object of classifying soils is to arrange them into groups according to their properties and behaviour (B) A soil classification system is ... first category of soil classification is based on grain size of the soil (D) All the above

Last Answer : Answer: Option D

Heavy metals got their name because compared to other atoms they have - (1) Higher densities (2) Higher atomic masses (3) Higher atomic numbers (4) Higher atomic radii

Description : Heavy metals got their name because compared to other atoms they have - (1) Higher densities (2) Higher atomic masses (3) Higher atomic numbers (4) Higher atomic radii

Last Answer : (2) Higher atomic masses Explanation: Arsenic, beryllium, cadmium, chromium, lead, manganese, mercury, nickel, and selenium are some of the metals called 'heavy' because of their high relative atomic ... and can cause damage or death in animals, humans, and plants even at very low concentrations.

Heavy metals got their name because compared to other atoms they have (1) Higher densities (2) Higher atomic masses (3) Higher atomic numbers (4) Higher atomic radii

Description : Heavy metals got their name because compared to other atoms they have (1) Higher densities (2) Higher atomic masses (3) Higher atomic numbers (4) Higher atomic radii

Last Answer : Higher atomic masses

Which of the following may be considered a Pressure Group? (1) Members of the Lok Sabha (2) Member of a Panchayat (3) Members of the cabinet (4) Members of a trade union

Description : Which of the following may be considered a Pressure Group? (1) Members of the Lok Sabha (2) Member of a Panchayat (3) Members of the cabinet (4) Members of a trade union

Last Answer : (4) Members of a trade union Explanation: Members of a Trade Union may be considered a pressure Group. A pressure group can be described as an organised group that does not put up candidates for election, but seeks to influence government policy or legislation.

What are transition elements? (1) Elements whose two outermost shells are incomplete (2) Elements which possess properties of both, metals and non-metals (3) They have eight electrons in the outermost shell (4) Elements whose three outermost shells are incomplete

Description : What are transition elements? (1) Elements whose two outermost shells are incomplete (2) Elements which possess properties of both, metals and non-metals (3) They have eight electrons in the outermost shell (4) Elements whose three outermost shells are incomplete

Last Answer : (1) Elements whose two outermost shells are incomplete

How are the properties of alloys different from those of metals?

Description : How are the properties of alloys different from those of metals?

Last Answer : Copper is reddish and zinc is grayish in colour where as brass which is an alloy of copper and zinc is golden yellow in colour. Iron is a magnetic substance but stainless steel, an alloy of iron is non magnetic.

An ideal gas as compared to a real gas at very high pressure occupies  (a) more volume  (b) less volume  (c) same volume  (d) unpredictable behaviour  (e) no such correlation.

Description : An ideal gas as compared to a real gas at very high pressure occupies  (a) more volume  (b) less volume  (c) same volume  (d) unpredictable behaviour  (e) no such correlation.

Last Answer : Answer : a

The behaviour of a perfect gas, undergoing any change in the variables which control physical properties, is governed by  A. Boyle’s law  B. Charles’ law  C. Gay-Lussac law  D. all of these

Description : The behaviour of a perfect gas, undergoing any change in the variables which control physical properties, is governed by  A. Boyle’s law  B. Charles’ law  C. Gay-Lussac law  D. all of these

Last Answer : Answer: D

Which of the following is the lightest of engineering metals? (A) Magnesium (B) Aluminium (C) Titanium (D) Tin

Description : Which of the following is the lightest of engineering metals? (A) Magnesium (B) Aluminium (C) Titanium (D) Tin

Last Answer : (A) Magnesium

Which of the following metals in not used for coating of the base metal to guard it against corrosion? (A) Lead (B) Cadmium (C) Magnesium (D) Aluminium

Description : Which of the following metals in not used for coating of the base metal to guard it against corrosion? (A) Lead (B) Cadmium (C) Magnesium (D) Aluminium

Last Answer : (C) Magnesium

Which of the following is the correct arrangement of the given metals in ascending order of their reactivity? Zinc, Iron, Magnesium, Sodium A) Zinc > Iron > Magnesium > Sodium B) Sodium > Magnesium > Iron > Zinc C) Sodium > Zinc > Magnesium > Iron D) sodium > Magnesium > Zinc > Iron

Description : Which of the following is the correct arrangement of the given metals in ascending order of their reactivity? Zinc, Iron, Magnesium, Sodium A) Zinc > Iron > Magnesium > Sodium B) Sodium > Magnesium > Iron > Zinc C) Sodium > Zinc > Magnesium > Iron D) sodium > Magnesium > Zinc > Iron

Last Answer : D) sodium > Magnesium > Zinc > Iron

The metals with very low melting points which melts by the temperature of palm are A) Sodium and potassium B) Lead and magnesium C) Aluminium and zinc D) Gallium and caesium

Description : The metals with very low melting points which melts by the temperature of palm are A) Sodium and potassium B) Lead and magnesium C) Aluminium and zinc D) Gallium and caesium

Last Answer : D) Gallium and caesium

Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode (A) Occurs higher in the electro-chemical series of metals (B) Is exemplified by magnesium plate (C) Is much cheaper than the cathodic base material to be guarded against corrosion (D) All (A), (B) & (C)

Description : Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode (A) Occurs higher in the electro-chemical series of metals (B) Is exemplified by magnesium plate (C) ... cathodic base material to be guarded against corrosion (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Which of the following metals reacts violently with water? (A) Mercury (B) Sodium (C) Calcium (D) Magnesium

Description : Which of the following metals reacts violently with water? (A) Mercury (B) Sodium (C) Calcium (D) Magnesium

Last Answer : Option B

Metals are generally hard, which of the following metal is an exception and can be cut with a knife? a) iron b)sodium c)gold d)magnesium

Description : Metals are generally hard, which of the following metal is an exception and can be cut with a knife? a) iron b)sodium c)gold d)magnesium

Last Answer : b)sodium

Select the wrong statement. (a) In oomycetes, female gamete is smaller and motile, while male gamete is larger and non- motile. (b) Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy. (c) Isogametes are similar in structure, function and behaviour. (d) Anisogametes differ either in structure, function or behaviour.

Description : Select the wrong statement. (a) In oomycetes, female gamete is smaller and motile, while male gamete is larger and non- motile. (b) Chlamydomonas exhibits both isogamy and anisogamy and ... in structure, function and behaviour. (d) Anisogametes differ either in structure, function or behaviour.

Last Answer : (a) In oomycetes, female gamete is smaller and motile, while male gamete is larger and non- motile.

A gas shows deviation from ideal behaviour at (A) Low pressure and high temperature (B) Low pressure and low temperature (C) Low temperature and high pressure (D) High temperature and high pressure

Description : A gas shows deviation from ideal behaviour at (A) Low pressure and high temperature (B) Low pressure and low temperature (C) Low temperature and high pressure (D) High temperature and high pressure

Last Answer : (C) Low temperature and high pressure

Hind limbs thumping on ground by a rabbit is a behaviour related to – (1) Courtship (2) Preparation for a duet (3) Warning signal to members (4) Surrender of a stronger opponent

Description : Hind limbs thumping on ground by a rabbit is a behaviour related to – (1) Courtship (2) Preparation for a duet (3) Warning signal to members (4) Surrender of a stronger opponent

Last Answer : (3) Warning signal to members Explanation: A thump of either a single hind leg or both together shows the rabbit's fear or displeasure over something. In any case, it shows the identification of some ... by the rabbit. The rabbit feels threatened by a danger, and warns the rest of his warren.

Utilitarian moral philosophies focus on A)the Golden Rule. B)the rights of individuals and the intentions associated with a particular behaviour. C)maximising the greatest good for specific individuals. D)maximising the greatest good for the greatest number of people. E)resolving conflicts and ensuring mutual benefit for all members of society.

Description : Utilitarian moral philosophies focus on A)the Golden Rule. B)the rights of individuals and the intentions associated with a particular behaviour. C)maximising the greatest good for specific individuals ... of people. E)resolving conflicts and ensuring mutual benefit for all members of society.

Last Answer : D)maximising the greatest good for the greatest number of people.

Hind limbs thumping on ground by a rabbit is a behaviour related to (1) Courtship (2) Preparation for a duet (3) Warning signal to members (4) Surrender ot a stronger opponent

Description : Hind limbs thumping on ground by a rabbit is a behaviour related to (1) Courtship (2) Preparation for a duet (3) Warning signal to members (4) Surrender ot a stronger opponent

Last Answer : Warning signal to members