Organic Compounds

Q. Which of the following chloride is/are partially hydrolysed in water(1) Bicl3(2) PCl3(3) AsCl3(4) NCl3

Q.

The functional group in methanol and methanal respectively are :

1. –OH, –CHO

2. –CHO, –OH

3. –OH, –COOH

4. –CHO, –COOH

Q. Arrange the following members of the homologous series of alcohols in decreasing order of boiling point.

1. $C{H}_{3}C{H}_{2}C{H}_{2}C{H}_{2}OH$
2. $C{H}_{3}C{H}_{2}C{H}_{2}OH$
3. $C{H}_{3}C{H}_{2}OH$
4. $C{H}_{3}C{H}_{2}C{H}_{2}C{H}_{2}C{H}_{2}OH$

1. I>IV>III>II
2. IV>III>II>I
3. I>II>III>IV
4. IV>I>II>III

Q. Show the isomers of Heptane(dot structure and brached structure)

Q. Fill in the blanks:

(g) The chemical properties of an organic compound are largely decided by the -------- and the physical properties of an organic compound are largely decided by the ---------(functional group, number of carbon atoms)

Q. What is the process of converting waste materials into re-usable materials ?

1. Reusing
2. Dumping
3. Recycling
4. Decomposing

Q. Why are carbon and its compounds used as fuels for most applications?​

Q. Question 12
Identify the unsaturated compounds from the following

(i) Propane
(ii) Propene
(iii) Propyne
(iv) Chloropropane

(a) (i) and (ii)
(b) (ii) and (iv)
(c) (iii) and (iv)
(d) (ii) and (iii)

Q. Question 16
Structural formula of benzene is
(a)

(b)

(c)

(d)

Q.

Paragraph for below question

नीचे दिये गये प्रश्न के लिए अनुच्छेद

One of the notable features of transition elements is the great variety of oxidation states. Highest oxidation states occur in or near the middle of the series. The ability of oxygen to stabilise the highest oxidation state is demonstrated in oxides. The highest oxidation number in the oxides coincides with the group number.

Low oxidation states are found when a complex compound contains ligands of π-acceptor character in addition to the σ-bonding.

संक्रमण तत्वों का एक विशेष लक्षण कई प्रकार की ऑक्सीकरण अवस्थाएं दर्शाना है। उच्चतम ऑक्सीकरण अवस्थाएं श्रेणी के मध्य में या इसके समीप पायी जाती हैं। ऑक्सीजन द्वारा उच्चतम ऑक्सीकरण अवस्था को स्थायी करने की क्षमता ऑक्साइडों में प्रदर्शित होती है। ऑक्साइडों में उच्चतम ऑक्सीकरण अंक वर्ग संख्या के समरूप होती है।

निम्नतर ऑक्सीकरण अवस्थाएं तब पायी जाती हैं जब संकुल यौगिक में σ-बंधन के अतिरिक्त π-ग्राही लक्षण वाले लीगेण्ड हों।

Q. Which pentahalide of vanadium is most stable?

प्रश्न - वैनेडियम का कौनसा पेन्टाहैलाइड सर्वाधिक स्थायी है?

1. VF₅
2. VCl₅
3. VBr₅
4. VI₅

Q.

Which of the following carbon compound is used as a solvent?

1. Ethane

2. Benzene

3. Butane

4. Butene

Q. Identify the compounds that belong to the homologous series of aldehydes.

1. Methane
2. Propanol
3. Methanal
4. Propanal
5. Butene
6. Pentanal
7. Ethanal
8. Butanal

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Define position isomerism along with an example.

Q. Identify the structural formula for propanol.

Q. Choose the pairs of compounds belonging to same homologous series.

1. Ethane
2. Methanol
3. Butan-2-one
4. Pent-2-yne
5. Butane
6. Pentan-2-ol
7. Propanone
8. Ethyne

Q.

Write the chemical formula of the simplest hydrocarbon.

Q.

Paragraph for below question

नीचे दिये गये प्रश्न के लिए अनुच्छेद

One of the notable features of transition elements is the great variety of oxidation states. Highest oxidation states occur in or near the middle of the series. The ability of oxygen to stabilise the highest oxidation state is demonstrated in oxides. The highest oxidation number in the oxides coincides with the group number.

Low oxidation states are found when a complex compound contains ligands of π-acceptor character in addition to the σ-bonding.

संक्रमण तत्वों का एक विशेष लक्षण कई प्रकार की ऑक्सीकरण अवस्थाएं दर्शाना है। उच्चतम ऑक्सीकरण अवस्थाएं श्रेणी के मध्य में या इसके समीप पायी जाती हैं। ऑक्सीजन द्वारा उच्चतम ऑक्सीकरण अवस्था को स्थायी करने की क्षमता ऑक्साइडों में प्रदर्शित होती है। ऑक्साइडों में उच्चतम ऑक्सीकरण अंक वर्ग संख्या के समरूप होती है।

निम्नतर ऑक्सीकरण अवस्थाएं तब पायी जाती हैं जब संकुल यौगिक में σ-बंधन के अतिरिक्त π-ग्राही लक्षण वाले लीगेण्ड हों।

Q. Element of first transition series which does not exhibit variable oxidation states is

प्रश्न - प्रथम संक्रमण श्रेणी का तत्व जो परिवर्तनीय ऑक्सीकरण अवस्थाएं नहीं दर्शाता, वह है

1. Sc
2. Cr
3. Mn
4. Cu

Q. The hydrogen ion concentration of three monoprotic acids $A,B$ and $C$ are $1\times {10}^{-5}\text{mol/L},1\times {10}^{-3}\text{mol/L}$ and $1\times {10}^{-2}\text{mol/L}$ respectively.
The correct order of their acidic strength is:

1. $A>B>C$
2. $B>C>A$
3. $C>B>A$
4. $A>C>B$

Q. The Prussian blue colour obtained during the test of nitrogen by Lassaigne's test is due to the formation of ?

1. $F{e}_4\left[Fe\right(CN{)}_6{]}_3$
2. $N{a}_4\left[Fe\right(CN{)}_6]$
3. $F{e}_2\left[Fe\right(CN{)}_6]$
4. $F{e}_3\left[Fe\right(CN{)}_6{]}_4$

Q. Identify the compounds that belong to the homologous series of aldehydes.

1. Methanal
2. Methane
3. Butene
4. Propanol
5. Propanal
6. Ethanal
7. Pentanal
8. Butanal

Q.

What is isomerism?

Q. Choose the pairs of compounds belonging to same homologous series.

1. Ethane
2. Methanol
3. Butan-2-one
4. Pent-2-yne
5. Butane
6. Pentan-2-ol
7. Propanone
8. Ethyne

Q. A hydrocarbon with 6-carbons in the skeletal can be named using which root word?

1. Prop-
2. But-
3. Pent-
4. Hex-

Q. Which is ______ highest mountain in the world? [Basic]

1. a
2. an
3. the
4. no article

Q. What are organic and inorganic compounds?

Q. Identify the compounds that belong to the homologous series of aldehydes.

1. Propanal
2. Methanal
3. Propanol
4. Ethanal
5. Butene
6. Methane
7. Butanal
8. Pentanal

Q. What is the structural formula for diethyl ether and diethyl ethene? Which one of them is the IUPAC name?

Q. The $p{K}_a$ of an indicator is $4$. Its $pH$ range is

1. $1-3$
2. $3-5$
3. $5-8$
4. $8-12$

Q. Write the number of $\sigma$ and $\pi$ bonds in the following molecules.

Q. Identify the compounds that belong to the homologous series of aldehydes.

1. Butene
2. Butanal
3. Propanol
4. Pentanal
5. Methane
6. Methanal
7. Propanal
8. Ethanal