8881 + Interview Questions in Chemistry in Class 10 Page 55 InterviewSolution

2701.	The number of valence electrons in an element belonging to period 3 and group 2 of the Modern Periodic Table is
Answer» 1 2 3 4 Answer :B

Discussion

2702.	The number of triple bonds between two C atoms in a molecule of ethyne is
Answer» three two one zero Answer :C

Discussion

2703.	The number of structural isomers for C_(6)H_(14) is :
Answer» 3 4 5 6 Solution :`CH_(3)-CH_(2)-CH_(2)-CH_(2)-CH_(2)-CH_(3)` `CH_(3)-CH_(2)-CH_(2)-underset(CH_(3))underset(\|)(CH)-CH_(3)` `CH_(3)-CH_(2)-underset(CH_(3))underset(\|)(CH)-CH_(2)-CH_(3)` `CH_(3)-CH_(2)-underset(CH_(3))underset(\|)(CH)-CH_(2)-CH_(3)` `CH_(3)-underset(CH_(3))underset(\|)(CH)-underset(CH_(3))underset(\|)(CH)-CH_(3)` `CH_(3)-underset(CH_(3))underset(\|)overset(CH_(3))overset(\|)(C)-CH_(2)-CH_(3)` There are TOTAL of FIVE STRUCTURAL isomers.

Discussion

2704.	The number of shells ________ down the group.
Answer» SOLUTION :INCREASES

Discussion

2705.	The number of periods and groups in the periodic table are ……….
Answer» 6,16 7,17 8,18 7,18 Answer :D

Discussion

2706.	The number of periods and groups in the periodic table are _______
Answer» `6,16` 7,17 8,18 7,18 Answer :D

Discussion

2707.	The numberof particlespresentin onemoleof anysubstanceis equalto
Answer» `6.023xx10 ^(23)` `60.23xx 10^(23)` `6.023 XX 10 ^(27)` `60.23 xx 10^(27)` ANSWER :A

Discussion

2708.	The number of oxygen molecules required for the complete combustion of 5 moles of methane is _________ .
Answer» Answer :`6.023 xx 10^(24)" molecules "11.HXO_(4)`

Discussion

2709.	The number of oxygen atoms present in 2 moles of a compound, which consists of a bivalent metal anda perchlorate ion is
Answer» 4 N 6 N 8 N 16 N Solution :Let the bivalent METAL ION be `M^(+2)`,then the formula of the compound formed will be `M(ClO_(4))_(2)`. 1 mole of compound contains 8 N oxygen atoms. `:. ` 2 moles of compound contain 16 N oxygen atoms.

Discussion

2710.	The number of oxygen atoms present in 2 moles ofa compound, which consists of a bivalent metal anda perchorate ion is
Answer» 4 N 6 N 8 N 16 N Answer :D

Discussion

2711.	The number of oxygen atoms in 4.4 g of CO_(2) is approximately
Answer» `1.2xx10^(23)` `6XX10^(22)` `6xx10^(23)` `12XX10^(23)` ANSWER :A

Discussion

2712.	The number of nodes of an s-orbitals increases with
Answer» the INCREASES in n value the DECREASES in n value the increases in 1 value the decreases in 1 value Solution :With INCREASE in n value, the number of nodes of 's' orbitals increases.

Discussion

2713.	The number of nodal regions for an 's'orbital is given by (n - 1). How do you account for this
Answer» SOLUTION :NODAL REGION for 1S ORBITAL

Discussion

2714.	The number of moles of BaCO_(3) which contains 1.5 moles of oxygen atoms is
Answer» ANSWER :0.5

Discussion

2715.	The number of moles of a sample that contains 12.046 xx 10^(23) atoms of iron is 2.
Answer» ANSWER :1

Discussion

2716.	The number of moles of a sample that contain 36 g of water is ………………. .
Answer» 1 mole 0.5 mole 4 MOLES 2 moles Solution :Hint : 18 g of water = 1 mole `therefore"36 g of water"=(1)/(18)xx36="2 moles"`

Discussion

2717.	The number of moles in 5 grams of Calcium is …………………. .
Answer» 0.5 mole 0.125 mole 1.25 mole 12.5 mole Solution :Hint : `"No. of MOLES"=("MASS")/("ATOMIC mass")` `=(5)/(40)=(1)/(8)="0.125 mole"`

Discussion

2718.	The number of molecules present in one mole of an element is called atomicity of an element.
Answer» Solution :Correct statement: The number of ATOMS PRESENT in one molecule of an element is called the ATOMICITY of an element.

Discussion

2719.	The number of molecules of CO_(2)persent in 44 g of CO_(2) is ………… .
Answer» `6.023xx10^(23)` `3.011xx10^(23)` `12XX10^(23)` `3xx10^(10)` SOLUTION :`6.023xx10^(23)"(Avogadro NUMBER)"`

Discussion

2720.	Thenumberof moleculesof CO_(2)presentin44 gof CO_(2)is :
Answer» `6.023xx10 ^(23)` `3XX10^(23)` `12XX10 ^(23)` `3xx10 ^(10)` ANSWER :A

Discussion

2721.	The number of molecules in 22.4 cm^3of dinitrogen gas at STP is
Answer» `6.002 XX 10^20` `6.022 xx 10^23` `22.4 xx 10^20` `22.4 xx 10^23` ANSWER :A

Discussion

2722.	The number of molecules in 16.0 g of oxygen is …………. .
Answer» `6.023xx10^(23)` `6.023xx10^(-23)` `3.01xx10^(-23)` `3.011xx10^(23)` Solution :Hint : `"32 G of OXYGEN contain "6.023xx10^(23)" molecules."` `therefore"16 g of oxygen will contain"` `(6.023xx10^(23))/(32)xx16=3.011xx10^(23)`

Discussion

2723.	The number of molecules in 22.4cm^(3) of nitorgen gas at STP is
Answer» `6.02xx10^(20)` `6.02xx10^(23)` `22.4xx10^(20)` `22.4xx10^(23)` Solution :`22400cm^(3)` is the volume of 1 mol GAS, `22.4cm^(3)` is the volume of `22.4/22400=10^(-3)` mol No. of MOLECULES `=6.02xx10^(23)xx10^(-3)` `=6.02xx10^(20)`

Discussion

2724.	The number of metals which exist as gas is/are____
Answer» one two three none Answer :D

Discussion

2725.	The number of Li atoms in_____________ g. is 6.022xx10^(24)atoms.
Answer» ANSWER :70G

Discussion

2726.	The number of isomers of C_6H_14 is
Answer» 4 5 6 17 Solution :Isomer of HEXANE, `C_6H_14` are `CH_3 - CH_2 - CH_2 -CH_2 - CH_2 -CH_3` `CH_3 - UNDERSET(CH_3) underset(\|)(CH) - CH_2-CH_2 - CH_2 -CH_3` `CH_3-CH_2 - underset(CH_3) underset(\|)(CH) - CH_2 - CH_3` `CH_3 -underset(CH_3)underset(\|)(CH) - underset(CH_3)underset(\|)(CH) - CH_3` `CH_3 - underset(CH_3) underset(\|)overset(CH_3)overset(\|)C - CH_2 - CH_3`

Discussion

2727.	The number of hydrogen atoms in 60 u of ethane is____________
Answer» ANSWER :`7.226xx10^(24)`

Discussion

2728.	The number of groups and periods in the modern periodic table respectively, are
Answer» 7 and 9 18 and 7 7 and 18 9 and 7 ANSWER :B

Discussion

2729.	The number of gram-atoms in 8 g of He are
Answer» 2 `1.204 XX 10^24` `3.10 xx 10^23` none of these SOLUTION :Gram ATOMIC MASS of He = 4 Number of gram - atoms of He = mass of He/gram atomic mass of He = 8/4 = 2

Discussion

2730.	The number of electrons in the valence shell of the atom of an element indicates the ____ to which the element belongs.
Answer» ANSWER :GROUP

Discussion

2731.	The number of electrons in the outermost shell ofalkali metals is __________ .
Answer» a.1 b.2 c.3 d.7 Solution :41

Discussion

2732.	The number of electrons in the outermost shell of a nonmetal can be
Answer» 1,2,3 or 4 2,3,4 or 5 4,5,6,7 or 8 4,5,0 or 2 Answer :C

Discussion

2733.	The number of electrons in the outer shell of the most stable or inert atoms is
Answer» 1 4 6 8 Answer :D

Discussion

2734.	The number of electrons in sodium ion is 10.
Answer» ANSWER :T

Discussion

2735.	The number of electrons in an element with atomic number X and mass number Y will be
Answer» X - Y Y-X X + Y X ANSWER :D

Discussion

2736.	The number of ______ determines which elements will be the first and which the last in a period of the periodic table.
Answer» SOLUTION :ELECTRON

Discussion

2737.	The number of covalent bonds present in pentane is -
Answer» 5 12 16 17 Answer :C

Discussion

2738.	The number of covalent bonds in a molecule of ethylene (C_(2)H_(4)) is
Answer» 4 12 6 5 Answer :C

Discussion

2739.	The number of covalent bonds present in ethylene is
Answer» 5 7 6 4 Answer :C

Discussion

2740.	The number of covalent bonds in ethylene is
Answer» 2 double bonds, 2 SINGLE bonds 2 double and 4 single bonds 2 single and 2 double bonds 1 double and 4 single bonds SOLUTION :Ethylene molecule has a STRUCTURE. Contains ONE double bond and four single bonds.

Discussion

2741.	The number of carbon compounds is so large because of its property of :
Answer» Isomerism Tetravalency of Carbon Catenation All of these Answer :D

Discussion

2742.	The number of carbon atoms present in the sixth member of alkenes is
Answer» SIX FIVE SEVEN four Answer :C

Discussion

2743.	The number of atoms present in the molecule is called Avogadro number.
Answer» SOLUTION :CORRECT statement: The number of atoms PRESENT in the molecule is CALLED its ATOMICITY.

Discussion

2744.	The number of atoms present in a molecule is called its ……………… .
Answer» SOLUTION :ATOMICITY

Discussion

2745.	The number of atoms present in a molecule of an element is known as its
Answer» VALENCY ATOMICITY CHEMICAL Formula symbol SOLUTION :atomicity

Discussion

2746.	The number of atoms in a molecule of the elementary substance is called …………… .
Answer» ATOMIC number Avogadro number atomic MASS ATOMICITY Solution :atomicity

Discussion

2747.	The nucleus of the hydrogen atom is called a
Answer» neutron electron proton none of them ANSWER :C

Discussion

2748.	Thenucleusof anatomconsistof protons and electrons ..
Answer» SOLUTION :CORRECT STATEMENT: thenucleusof anatomconsistof protons& neutrons.

Discussion

2749.	The noble gas with the smallest atomic radius.
Answer» SOLUTION :HELIUM (He) .

Discussion

2750.	The no. of significant figures in pi are
Answer» 1 2 3 infinite Answer :D

Discussion

Explore topic-wise InterviewSolutions in .

The number of valence electrons in an element belonging to period 3 and group 2 of the Modern Periodic Table is

The number of triple bonds between two C atoms in a molecule of ethyne is

The number of structural isomers for C_(6)H_(14) is :

The number of shells ________ down the group.

The number of periods and groups in the periodic table are ……….

The number of periods and groups in the periodic table are _______

The numberof particlespresentin onemoleof anysubstanceis equalto

The number of oxygen molecules required for the complete combustion of 5 moles of methane is _________ .

The number of oxygen atoms present in 2 moles of a compound, which consists of a bivalent metal anda perchlorate ion is

The number of oxygen atoms present in 2 moles ofa compound, which consists of a bivalent metal anda perchorate ion is

The number of oxygen atoms in 4.4 g of CO_(2) is approximately

The number of nodes of an s-orbitals increases with

The number of nodal regions for an 's'orbital is given by (n - 1). How do you account for this

The number of moles of BaCO_(3) which contains 1.5 moles of oxygen atoms is

The number of moles of a sample that contains 12.046 xx 10^(23) atoms of iron is 2.

The number of moles of a sample that contain 36 g of water is ………………. .

The number of moles in 5 grams of Calcium is …………………. .

The number of molecules present in one mole of an element is called atomicity of an element.

The number of molecules of CO_(2)persent in 44 g of CO_(2) is ………… .

Thenumberof moleculesof CO_(2)presentin44 gof CO_(2)is :

The number of molecules in 22.4 cm^3of dinitrogen gas at STP is

The number of molecules in 16.0 g of oxygen is …………. .

The number of molecules in 22.4cm^(3) of nitorgen gas at STP is

The number of metals which exist as gas is/are____

The number of Li atoms in_____________ g. is 6.022xx10^(24)atoms.

The number of isomers of C_6H_14 is

The number of hydrogen atoms in 60 u of ethane is____________

The number of groups and periods in the modern periodic table respectively, are

The number of gram-atoms in 8 g of He are

The number of electrons in the valence shell of the atom of an element indicates the ____ to which the element belongs.

The number of electrons in the outermost shell ofalkali metals is __________ .

The number of electrons in the outermost shell of a nonmetal can be

The number of electrons in the outer shell of the most stable or inert atoms is

The number of electrons in sodium ion is 10.

The number of electrons in an element with atomic number X and mass number Y will be

The number of ______ determines which elements will be the first and which the last in a period of the periodic table.

The number of covalent bonds present in pentane is -

The number of covalent bonds in a molecule of ethylene (C_(2)H_(4)) is

The number of covalent bonds present in ethylene is

The number of covalent bonds in ethylene is

The number of carbon compounds is so large because of its property of :

The number of carbon atoms present in the sixth member of alkenes is

The number of atoms present in the molecule is called Avogadro number.

The number of atoms present in a molecule is called its ……………… .

The number of atoms present in a molecule of an element is known as its

The number of atoms in a molecule of the elementary substance is called …………… .

The nucleus of the hydrogen atom is called a

Thenucleusof anatomconsistof protons and electrons ..

The noble gas with the smallest atomic radius.

The no. of significant figures in pi are