Recent questions tagged class11

Which of the following is metaboric acid ?

asked Jul 25, 2014 by thanvigandhi_1

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The atomic number of In is 49.It belongs to

asked Jul 25, 2014 by sreemathi.v

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Solve the inequality for real $x, 3(2-x) \geq 2(1-x) $

asked Jul 25, 2014 by meena.p

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An element X belongs to Group 16 and $5^{th}$ period.Its atomic number is

asked Jul 25, 2014 by sreemathi.v

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Which of the following is boric acid ?

asked Jul 25, 2014 by thanvigandhi_1

1 answer

Which of the following statements regarding Boron is not correct ?

asked Jul 25, 2014 by thanvigandhi_1

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The atomic numbers of elements of the lanthanide series lie in the range of

asked Jul 25, 2014 by sreemathi.v

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Which of the following statements regarding boron is not correct ?

asked Jul 25, 2014 by thanvigandhi_1

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The total number of elements in Groups 8 to 10 of the periodic table is

asked Jul 25, 2014 by sreemathi.v

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The treatment of $Mg_3B_2$ with acids produces

asked Jul 25, 2014 by thanvigandhi_1

1 answer

Solve the inequality for real $x 3(x-1) \leq 2(x-3)$

asked Jul 25, 2014 by meena.p

1 answer

The atomic numbers of elements of the second inner transition elements lie in the range of

asked Jul 25, 2014 by sreemathi.v

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Which of the following facts regarding boron and silicon is not true ?

asked Jul 25, 2014 by thanvigandhi_1

1 answer

An element X belongs to Group 14 and $2^{nd}$ period of the periodic table.Its atomic number will be

asked Jul 25, 2014 by sreemathi.v

1 answer

Solve the inequality for real $x: 3x-7 > 4x -5$

asked Jul 25, 2014 by meena.p

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The number of elements in the fourth period of the periodic table is

asked Jul 25, 2014 by sreemathi.v

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The atomic number of element next to $_{53}I$ in the same group is

asked Jul 25, 2014 by sreemathi.v

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Solve the given inequality for real $x: 4x+3 < 5x +7$

asked Jul 25, 2014 by meena.p

1 answer

Which of the following equations is not correctly formulated ?

asked Jul 25, 2014 by thanvigandhi_1

1 answer

The elements with atomic numbers 21 to 30 belong to

asked Jul 25, 2014 by sreemathi.v

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Solve $3 x+8 > 2$ when (i) x is an integer (ii) x is a real number

asked Jul 25, 2014 by meena.p

1 answer

The number of periods in the long form of periodic table is

asked Jul 25, 2014 by sreemathi.v

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In Lother Meyer plot of atomic volume versus atomic mass,the peaks are occupied by

asked Jul 25, 2014 by sreemathi.v

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Solve $5 x-3 < 7 $ when (i) x is an integer (ii) x is a real number

asked Jul 25, 2014 by meena.p

1 answer

In the sixth period,the orbitals being filled are

asked Jul 25, 2014 by sreemathi.v

1 answer

Solve $-12 x > 30$ when (i) x is a natural number (ii) x is an integer

asked Jul 25, 2014 by meena.p

1 answer

The fifth period of modern periodic table includes

asked Jul 25, 2014 by sreemathi.v

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The oxidation state of Sc in $Sc_2Si_2O_7$ is

asked Jul 25, 2014 by sreemathi.v

1 answer

The charge $x$ of $Si_6O_{18}^x$ will be

asked Jul 25, 2014 by sreemathi.v

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Which one of the following is a covalent carbide?

asked Jul 25, 2014 by sreemathi.v

1 answer

Each silicon atom in the trimer cyclic silicate has

asked Jul 25, 2014 by sreemathi.v

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Which of the following elements is not the constituent of zeolite A

asked Jul 25, 2014 by sreemathi.v

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Which of the following statements is correct?

asked Jul 25, 2014 by sreemathi.v

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Which of the following bonds has the highest bond energy ?

asked Jul 25, 2014 by sreemathi.v

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Which of the following is an allylide?

asked Jul 25, 2014 by sreemathi.v

1 answer

Solve $24 x < 100$ when (i) x is a natural number (ii) x is an integer

asked Jul 25, 2014 by meena.p

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Which of the following is a acetylide?

asked Jul 25, 2014 by sreemathi.v

1 answer

Which of the following is a methanide?

asked Jul 25, 2014 by sreemathi.v

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Which of the following compounds of lead is the most stable?

asked Jul 25, 2014 by sreemathi.v

1 answer

Which of the following fuel gases has the highest calorific value?

asked Jul 25, 2014 by sreemathi.v

1 answer

Hydrolysis of $SiF_4$ in alkaline medium produces

asked Jul 25, 2014 by sreemathi.v

1 answer

Amongst the following element,which one has the highest melting point?

asked Jul 25, 2014 by sreemathi.v

1 answer

Lead pencil contains

asked Jul 25, 2014 by sreemathi.v

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Bond energy is highest amongst

asked Jul 25, 2014 by sreemathi.v

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Which of the following oxides is used in lead accumulators?

asked Jul 25, 2014 by sreemathi.v

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The only stable tetrahalide of lead is

asked Jul 25, 2014 by sreemathi.v

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Which of the following statements is not correct?

asked Jul 25, 2014 by sreemathi.v

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Which of the following statements is not correct?

asked Jul 25, 2014 by sreemathi.v

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Heating lead in air at higher temperature ($T \geq 725K)$,the oxide formed is

asked Jul 25, 2014 by sreemathi.v

1 answer

Which of the following equations is not actually observed?

asked Jul 25, 2014 by sreemathi.v

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