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Class 12th English

The four sentences (labelled 1, 2, 3 and 4) below, when properly sequenced, would yield a coherent paragraph. Decide on the proper sequencing of the order of the sentences and choose the correct option.

1. These remarkable structures are a common sight soaring above the rooftops of Yazd.

2. They are often rectangular towers, but they also appear in circular, square, octagonal and other ornate shapes.

3. Among Yazd's ancient technologies is the wind catcher, or bâdgir in Persian.

4. The city of Yazd in the desert of central Iran has long been a focal point for creative ingenuity.

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Raj Pandey

Contributor-Level 9

Sentence 4 introduces the city of Yazd and 1 further elaborates the 4^th sentence. 4132 is the most logical sequence.

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Class 12th Chemistry

An empty LGP cylinder weighs 14.8kg. When full, it weights 29.0kg and shows a pressure of 3.47 atm. In the course of use at ambient temperature, the mass of the cylinder is reduced to 23.0kg. The final pressure inside of the cylinder is______atm. (Nearest integer)

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alok kumar singh

Contributor-Level 10

Mass of empty cylinder = 14.8 kg

Mass of cylinder when full = 29 kg

Mass of gas in cylinder when filled; W₁ = 29 – 14.8 = 14.2 kg

Mass of gas in cylinder after using, W₂ = 23 – 14.8 = 8.2 kg

Initial pressure ; P₁ = 3.47 atm

Final pressure ; P₂ =?

Using

$P V = \frac{W}{M} R T$

$P_{1} V = \frac{W_{1}}{M} R T . . . . . . . . . . (I)$

$P_{2} V = \frac{W_{2}}{M} R T . . . . . . . . . . . (I I)$

$\frac{P_{1}}{P_{2}} = \frac{W_{1}}{W_{2}}$

$\frac{3.47}{P_{2}} = \frac{14.2}{8.2}$

P₂ = atm

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Class 12th Chemistry

Which among the following is not a polyester?

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Vishal Baghel

Contributor-Level 10

Glyptal, Dacron & PHBV are polyesters.

Novalac is copolymer of phenol & formaldehyde but not polyesters.

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5 months ago

Class 12th English

Answer the questions on the basis of the information given below.

Four houses Bachan, Khan, Chaudhary and Sharma are located in a row in the given order. Each of the houses is occupied by a person earning a fixed amount of a salary. The four persons are Powell, Kartik, Leo, and Samay.

Rea the following instruction carefully:

I. Powell lives between Samay and Kartik

II. Leo does not stay in Bachan house

III. The person living in Chaudhary house earns more than that of person living in Bachan

IV. Salary of Samay is more than that of Powell but lesser than that of Kartik

V. One of the person earns Rs. 80000

VI. The person earning Rs. 1100

...more

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alok kumar singh

Contributor-Level 10

Name	Blue	Green	Red	Yellow	Salary
Paul	*	?	*	*	30
Krishna	*	*	?	*	110
Laxman	*	*	*	?	50
Som	?	*	*	*	80

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5 months ago

Class 12th Chemistry

Match List – I with List – II

Choose the most appropriate answer from the options given below:

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alok kumar singh

Contributor-Level 10

Electrophilic addition of bromine to an alkene is anti-addition, in which cis-alkene gives two enantiomers and trans – alkene gives meso form

Here; trans-but-2-ene will give meso products

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5 months ago

Class 12th Coordination Compounds

Spin only magnetic moment in BM of ${[F e {(C O)}_{4} (C_{2} O_{4})]}^{+}$ is:

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Vishal Baghel

Contributor-Level 10

${[F e {(C O)}_{4} (C_{2} O_{4})]}^{+}$

x + 4 * 0 – 2 * 1 = +1

x = +3

Fe⁺³ = 4s⁰3d⁵

In presence of strong ligand, i.e, CO.

Spin only magnetic moment

$= \sqrt[]{n (n + 2)} B . M = \sqrt[]{1 (1 + 2)} B . M$

$\sqrt[]{3} B . M . = 1.73 B . M$

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New question posted

5 months ago

Class 12th English

Answer the questions on the basis of the information given below.

Rea the following instruction carefully:

I. Powell lives between Samay and Kartik

II. Leo does not stay in Bachan house

III. The person living in Chaudhary house earns more than that of person living in Bachan

IV. Salary of Samay is more than that of Powell but lesser than that of Kartik

V. One of the person earns Rs. 80000

VI. The person earning Rs. 1100

...more

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New answer posted

5 months ago

Class 12th English

(i) Six friends Rohit, Kailash, Ajay, Raghav, Ajeet and Azam were engineering graduates. All six of them were placed in six different locations, namely Tisco-Mumbai, Telco-Srinagar, Wipro-Lucknow, HCL-Delhi, Mecon-Jaipur and Usha Martin-Patna. Each of them has their personal e-mail id with different email providers i.e. Gmail, Indiatimes, Rediffmail, Yahoo, Hotmail, Sancharnet, though not necessarily in the same order.

(ii) The one having e-mail account with Sancharmet works in Delhi and the one having an e-mail account with India times works for Tisco.

(iii) Ajeet does not stay in Lucknow and does not work for Mecon, the one who works

...more

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Payal Gupta

Contributor-Level 10

Friends	Company	Location	Email-id
Ajeet	Hcl	Delhi	Sancharnet
Ajay	Tisco	Mumbai	Indiatimes
Azam	Wipro	Lucknow	Hotmail
Rohit	Teclo	Srinagar	Rediff
Raghav	Mecon	Jaipur	Email
Kailash	Usha martin	Patna	Yahoo

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New answer posted

5 months ago

Class 12th English

(ii) The one having e-mail account with Sancharmet works in Delhi and the one having an e-mail account with India times works for Tisco.

(iii) Ajeet does not stay in Lucknow and does not work for Mecon, the one who works

...more

0 Follower 1 View

Payal Gupta

Contributor-Level 10

Friends	Company	Location	Email-id
Ajeet	Hcl	Delhi	Sancharnet
Ajay	Tisco	Mumbai	Indiatimes
Azam	Wipro	Lucknow	Hotmail
Rohit	Teclo	Srinagar	Rediff
Raghav	Mecon	Jaipur	Email
Kailash	Usha martin	Patna	Yahoo

0 0

New answer posted

5 months ago

Class 12th English

(ii) The one having e-mail account with Sancharmet works in Delhi and the one having an e-mail account with India times works for Tisco.

(iii) Ajeet does not stay in Lucknow and does not work for Mecon, the one who works

...more

0 Follower 1 View

Payal Gupta

Contributor-Level 10

Friends	Company	Location	Email-id
Ajeet	Hcl	Delhi	Sancharnet
Ajay	Tisco	Mumbai	Indiatimes
Azam	Wipro	Lucknow	Hotmail
Rohit	Teclo	Srinagar	Rediff
Raghav	Mecon	Jaipur	Email
Kailash	Usha martin	Patna	Yahoo

0 0

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