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Recent questions tagged unit4

Where is an electron added during change of $NO^+$ to $NO$

asked Dec 9, 2013 by sreemathi.v

1 answer

Match the correct formula and shape of the central atom. Which pair is correct?

asked Dec 9, 2013 by sreemathi.v

1 answer

The xenon compounds that are isostructural with $IBr_2-$ and $BrO_3-$ respectively are

asked Dec 9, 2013 by sreemathi.v

1 answer

The structure of $N(CH_3)_3$ and $N(SiH_3)_3$ are respectively

asked Dec 9, 2013 by sreemathi.v

1 answer

The correct order of bond angles of $CH_4, NH_3$ and $H_2O$ are

asked Dec 9, 2013 by sreemathi.v

1 answer

The paramagnetism of $O_2$ molecule is believed to be due to the presence of two electrons with parallel spin in

asked Dec 9, 2013 by sreemathi.v

1 answer

Which of the following statement is false?

asked Dec 9, 2013 by sreemathi.v

1 answer

The structure of $IF_7$ is

asked Dec 9, 2013 by sreemathi.v

1 answer

The percentage of p -character in the orbital forming P-P bond in $P_4$ is

asked Dec 9, 2013 by sreemathi.v

1 answer

The structure of $XeO_3$ is

asked Dec 9, 2013 by sreemathi.v

1 answer

Stable compounds in +1 oxidation state are formed by

asked Dec 9, 2013 by sreemathi.v

1 answer

Which element has highest electronegativity ?

asked Dec 9, 2013 by sreemathi.v

1 answer

Octahedral molecular shape exist in

asked Dec 9, 2013 by sreemathi.v

1 answer

Which of the following molecule is expected to exhibit the diamagnetic behavior?

asked Dec 9, 2013 by sreemathi.v

1 answer

Among the following the maximum covalent character is shown by the compound

asked Dec 9, 2013 by sreemathi.v

1 answer

The correct sequence which shows the increasing basic strength is

asked Dec 9, 2013 by sreemathi.v

1 answer

Using MO theory predict which of the following species has the shortest bond length

asked Dec 9, 2013 by sreemathi.v

1 answer

Match the each of the diatomic molecule in column-I with the bond orders are given in the column -II

asked Dec 9, 2013 by sreemathi.v

1 answer

The bond energy (in kcal/mol) of C-C single bond is approximately

asked Dec 6, 2013 by sreemathi.v

1 answer

Which of the following species has bond order different from that in CO?

asked Dec 6, 2013 by sreemathi.v

1 answer

Which of the following is a false statement?

asked Dec 6, 2013 by sreemathi.v

1 answer

Which of the following represent the correct order of increase in covalent character?

asked Dec 6, 2013 by sreemathi.v

1 answer

Which of the following represent the correct order of decrease in covalent character?

asked Dec 6, 2013 by sreemathi.v

1 answer

Which of the following represent the correct order of increase in covalent character?

asked Dec 6, 2013 by sreemathi.v

1 answer

Which of the following represent the correct order of decreasing lattice energy?

asked Dec 6, 2013 by sreemathi.v

1 answer

Which of the following compounds does not obey the octet rule?

asked Dec 6, 2013 by sreemathi.v

2 answers

Which of the following does not obey the octet rule?

asked Dec 6, 2013 by sreemathi.v

1 answer

Which of the following obeys the octet rule?

asked Dec 6, 2013 by sreemathi.v

1 answer

Which one of the following oxides is expected to exhibit paramagnetic behavior?

asked Dec 6, 2013 by sreemathi.v

1 answer

The bond order of $[He_2]^{4-}$ is

asked Dec 6, 2013 by sreemathi.v

1 answer

In which case electron from bonding molecular orbital is removed?

asked Dec 6, 2013 by sreemathi.v

1 answer

$BrO_3^-$ is isostructural with a noble gas species

asked Dec 6, 2013 by sreemathi.v

1 answer

The number of anti-bonding electrons in CO molecules is

asked Dec 6, 2013 by sreemathi.v

1 answer

In allene, hybridization of the central and terminal carbons, respectively, are

asked Dec 6, 2013 by sreemathi.v

1 answer

Which of the following molecule exhibits the largest bond angle?

asked Dec 6, 2013 by sreemathi.v

1 answer

Molecular orbital theory predicts the $F_2^{2+}$ ion has a bond order of

asked Dec 6, 2013 by sreemathi.v

1 answer

The number of electrons in the $\sigma$ 2p molecular orbital in $N_2^+$ is

asked Dec 6, 2013 by sreemathi.v

1 answer

The hybridisation and shape of the $[Pt(Cl)_4]^{2-}$ is

asked Dec 6, 2013 by sreemathi.v

1 answer

In which physical state of a compound, the magnitude of hydrogen bonding is very high

asked Dec 6, 2013 by sreemathi.v

1 answer

In $C_2H_5OH$, which type of hydrogen bond can be observed

asked Dec 6, 2013 by sreemathi.v

1 answer

In most stable structure of $ClF_3$ molecule, how many lone pairs are there in equatorial positions

asked Dec 6, 2013 by sreemathi.v

1 answer

The number of $\pi-$bonds in ethane, ethene and ethyne are respectively

asked Dec 6, 2013 by sreemathi.v

1 answer

According to VSEPR theory, which of the following is non-linear molecule

asked Dec 6, 2013 by sreemathi.v

1 answer

A body of mass m moving with velocity v collides head on with another body of mass $2m$ which is initially at rest. The ratio of K.E of colliding body before and after collision will be

asked Aug 9, 2013 by meena.p

1 answer

Two masses of $0.1\;kg$ and $0.4 \;kg$ move towards each other with velocities $1 m/s$ and $0.1 m/s$ respectively. After collision they stick together . In 10 seconds the combined mass travels

asked Aug 9, 2013 by meena.p

1 answer

Two balls at same temperature collide inelastically which of the following are not conserved 1) Kinetic energy 2) Velocity 3) temperature 4) momentum

asked Aug 9, 2013 by meena.p

1 answer

A tennis ball dropped from height of $2m$ rebounds only $1.5 m, $ after hitting the ground , What fraction of energy is lost in the impact

asked Aug 8, 2013 by meena.p

1 answer

A spring 40 mm long is streched by application of a force. If 10 N force is required to stretch the spring through 1 mm, then work done in stretching the spring through 40 mm is

asked Aug 8, 2013 by meena.p

1 answer

If momentum of boby increases by $0.01 %$ its kinetic energy will increase by

asked Aug 8, 2013 by meena.p

1 answer

Two small particle of equal masses start moving in opposite direction from A in a horizontal circular path of radius r Their tangential velocity at A are v and 2v, respectively as shown. Where will be the first collision in the path of the circle.

asked Aug 8, 2013 by meena.p

1 answer

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