Early History of Organic Compounds

Q. The vital force theory was disproved by which event?

1. Creation of diamonds
2. Synthesis of urea
3. Discovery of carbon dioxide
4. None of these

Q. 32. How many geometrical isomers are possible for the following complexes [MA3BCD]; [MA2BCDE] ; and [MA2B2C2]

Q. The first organic compound urea was synthesized in laboratory from which one of the following compound?

1. Ammonium carbonate
2. None of the above
3. Ammonium chloride
4. Ammonium cyanate

Q. The vital force theory was disproved by which event?

1. Creation of diamonds
2. Synthesis of urea
3. Discovery of carbon dioxide
4. None of these

Q. Isomers have essentially identical ___

1. Structural formula
2. Chemical properties
3. Molecular formula
4. Physical properties

Q.

What is the definition of vital force?

Q. Which of the following compounds is the reactant in Rosenmund's reaction?

1. $C{H}_{3}COOC{H}_3$
2. $C{H}_{3}CHO$
3. $C{H}_{3}C{H}_{2}Cl$
4. $C{H}_{3}COCl$

Q. 6. Which of the following will give maximum numbers number of isomers and how A) [Ni(C2O4)(en)2]cl2 B) [Cr(SCN)2(NH3)4]Cl

Q. Why do you think Berzelius put forth the vital force theory?

1. He wanted to prove that organic compounds cannot be synthesised in the lab.
2. He wanted to create a model to account for the observations of his time.
3. He knew it was just a theory, so it was bound to be false.
4. None of these.

Q. What is the number of compounds having a benzene nucleus can have the molecular formula $C_7{H}_{8}O$?

Q.

Which of the following have same molecular formula?

1. 

2. 

3. 

4. 

Q. The first organic compound synthesized in the laboratory from an inorganic compound is:

1. $N{H}_{4}NCO$
2. $C{H}_{3}COOH$
3. $N{H}_2-CO-N{H}_2$
4. $C{H}_4$

Q. What is the number of compounds having a benzene nucleus can have the molecular formula $C_7{H}_{8}O$?

Q.

Which of the following is not correct for isomers?

1. Same molecular formula

2. Different molecular weight

3. Different Properties

4. None of these.

Q. The first organic compound prepared from an inorganic compound was:

1. urea
2. acetic acid
3. methane
4. benzene

Q. Chemical formula for calcium pyrophosphate is The formula for ferric pyrophosphate will be

1. 
2. 
3. 
4. 

Q. Compounds with same molecular formula but different structural formula are

1. Isotopes
2. Isobars
3. Isomers
4. Isoelectronic

Q. Find the product 'C' in the given reaction :
$2C+H_2\stackrel{\text{electric arc}}{\to }A\stackrel{dil.H_{2}S{O}_4}{\to }B\stackrel{\left[O\right]}{\to }C$

1. Formic acid
2. Acetic acid
3. Methane
4. None of the above

Q. In the separation of $C{u}^{2+}$ and $C{d}^{2+}$ in 2nd group of qualitative analysis of eations, tetrammine copper(ll) sulphate and tetraammine cadmium(ll) sulphate react with $KCN$ to form the corresponding cyanide complexes; which one of the following pairs of the complexes and their relative stabilities enables the separation of $C{u}^{2+}$ and $C{d}^{2+}$?

1. $K_3\left[Cu{\left(CN\right)}_4\right]$: more stable and $K_2\left[Cd{\left(CN\right)}_4\right]$: less stable
2. $K_2\left[Cu{\left(CN\right)}_4\right]$: less stable and $K_2\left[Cd{\left(CN\right)}_4\right]$: more stable
3. $K_2\left[Cu{\left(CN\right)}_4\right]$: more stable and $K_2\left[Cd{\left(CN\right)}_4\right]$: less stable
4. $K_3\left[Cu{\left(CN\right)}_4\right]$: less stable and $K_2\left[Cd{\left(CN\right)}_4\right]$: more stable

Q. The first organic compound urea was synthesized in laboratory from which one of the following compound?

1. Ammonium chloride
2. Ammonium cyanate
3. Ammonium carbonate
4. None of the above

Q. The empirical formula of a compound is $C{H}_2$ and its molecular weight is $84$. The molecular formula of the compound is:

1. $C_4{H}_8$
2. $C_6{H}_6$
3. $C_6{H}_8$
4. $C_6{H}_{12}$

Q.

State whether the following statement is true or false.
“Antoine Lavoisier was a German scientist.”

1. True
2. False

Q. What is the number of compounds having a benzene nucleus can have the molecular formula $C_7{H}_{8}O$?

Q. The number of isomers possible for molecular formula C2FClBrI 1)2 2)3 3)4 4)6

Q. Find the product 'C' in the given reaction :
$2C+H_2\stackrel{\text{electric arc}}{\to }A\stackrel{dil.H_{2}S{O}_4}{\to }B\stackrel{\left[O\right]}{\to }C$

1. Formic acid
2. Acetic acid
3. Methane
4. None of the above

Q. Dehydration of ammonium carbamate produces:

1. biuret
2. ammonia water
3. none of these
4. urea

Q. The concentration of $C=85.45$% and $H=14.55$% is not obeyed by the formula :

1. $C_4{H}_8$
2. $C_2{H}_4$
3. $C_2{H}_6$
4. $C{H}_2$

Q.

17. Form similar pairs of words.

ii. ________ and $\mathrm{K}$ / calcium and $\mathrm{Ca}$

Q.

How organic compounds were obtained in the eighteenth century?

Q. From the given organic compounds, identify the pairs of isomers.