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How is carbon monoxide formed ?

Two elements X and Y need to be arranged in Mendeleev's periodic table. X has 3 protons more ​​​​​than Y but their neutrons are equal in number. Which of the following is correct about X and Y?

In the given set of reactions, 2 – Bromopropane

$\underset{alc./heat}{\overset{AgCN}{\to }}X\stackrel{LiA/H_4}{\to }Y$

The IUPAC name of product ‘Y’ is

In the periodic table, where are non-metals located:

Ammonia solution in water gives a blue precipitate when it combines with a solution of copper salt. The blue precipitate further dissolves in excess of ammonia solution to give an azure blue solution. Explain with equation.

Give the characteristic tests for the following gases: [5 MARKS]

(a) ${\text{CO}}_2$
(b) ${\text{SO}}_2$
(c) ${\text{O}}_2$
(d) ${\text{H}}_2$
(e) ${\text{N}}_2$

Question 21.

Which of the following is used for dissolution of gold ?

(a) Hydrochloric acid

(b) Sulphuric acid

(c) Nitric acid

(d) Aqua regia

Which of these is an odourless and colourless gas?

An organic acid 'X' is a liquid which often freezes during winter time in cold countries. It has the molecular formula C₂H₄O₂ . On warming with ethanol in the presence of a few drops of sulphuric acid, a compound ‘Y’ with sweet smell is formed. (i) Identify X and 'Y'. (ii) Write chemical equation for the reaction involved

Conductivity (unit Siemen's S) is directly proportional to area of the vessel and the concentration of the solution in it and is inversely proportional to the length of the vessel then the unit of the constant of proportionality is:

1. 1.204

Define neutralization reaction. Give three applications of neutralization reactions.

Given below is the Balance Sheet of A and B, who axe carrying on partnership business on 31.12.2006. A and B share profits and losses in the ratio of 2 :1.
$\text{Balance Sheet of A and B}$
$\text{as on December 31, 2016}$
$\begin{array}{cccc}\text{Capital and Liabilities}& \text{Amt. (Rs)}& \text{Assets}& \text{Amt. (Rs)}\\ \text{Bills payable}& 10,000& \text{Cash in hand}& 10,000\\ \text{Creditors}& 58,000& \text{Cash at bank}& 40,000\\ \text{Outstanding}& 2,000& \text{Sundry Debtors}& 60,000\\ \text{Expenses}& & \text{Stock}& 40,000\\ \text{Capitals}& & \text{Plant}& 1,00,000\\ \text{-}& & \text{Building}& 1,50,000\\ \text{A}1,80,000& & & \\ \text{B}\underset{–}{1,50,000}& 3,30,000& & \\ & \overline{\underset{–}{\underset{–}{4,00,000}}}& & \overline{\underset{–}{\underset{–}{4,00,000}}}\end{array}$

C is admitted as a partner on the date of the balance sheet on the following terms.

(i) C will bring Rs. 1,00,000 as his capital and Rs. 60, 000 as his share of goodwill for $\frac{1}{4}$ share in the profits.

(ii) Plant is to be appreciated to Rs. 1,20,000 and the value of buildings is to be appreciated by 10%.

(iii) Stock is found over valued by Rs. 4,000.

(iv) A provision for bad and doubtful debts is to be created at 5% of debtors.

(v) Creditors were unrecorded to the extent of Rs.1,000.

Pass the necessary, journal entries, prepare the Revaluation account, and Partners Capital account and show the balance sheet after the admission of C.

The product of the given reaction is

The element with controversial placement in modern periodic table is __.

Which physical and chemical properties of the elements were used by Mendeleev in creating his periodic table ? List two observation which posed a challenge of Mendeleev's periodic law.

Hydrogen chloride gas is collected by