NDA Chemistry 2016/2017 Past Questions

Which variety of glass is heat resistant?

In vulcanisation, natural rubber is heated with

Which one of the following is correct? Butter is

Which one of the following has the highest density?

Which one of the following is the softest?

Which of the following materials is suitable for water purification?

Which one of the following is an element which never exhibits positive oxidation state in any of its compounds?

Rubies and Sapphires are known chemically as

Which one of the following when dissolved in H₂O gives hissing sound?

Mixture of which one of the following pairs of gases is the cause explosion in mines?

Esterification of propane 1,2,3, triol and unsaturated higher carboxylic acid will produce___

In solution, aminoethanol acid (glacier) can be represented as NH₃ + CH₂COO^-. This implies that it_____

The formula (CH₃)₃CH is that of

What is the relationship between the compounds represented by the following structure
$\table H, ,Br;∣, ,∣;C, =, C;∣, , ∣;Br, ,H;$ and $\table H, ,H;∣, ,∣;C, =, C;∣, , ∣;Br, ,Br;$

The composition of gunpowder is

Carbon is often deposited in the exhaust pipe of cars because of the

The product of the reaction between ethanol and excess acidified K₂CrO^-

Which of the following alkanols on oxidation, is most likely to yield the compound below.
$\table CH_3COOH;∣;CH_3;$

In which of the following processes are larger molecules broken into smaller structures?

What is the IUPAC name of the compound with this structure?
$\table , , H, , H, , H, , H, ,; , , ∣, , ∣, , ∣, ,∣, ,; H, -, C, -, C, -, C, -, C, -, H; , , ∣, , ∣, , ∣, ,∣, ,;, , H, , CH_3, , H, , H, ,;$

Which of the following statements about soapless detergents is correct? They

²³⁴₉₀Th = ^x_yPa + β
In this reaction above, x and y are:

Cancerous growths are Cured by exposure to

When cathode rays are deflected onto the electrode of an electrometer, the instrument becomes

Nuclear fission involves the spitting of a heavy element into two nuclei of

The graph below demonstrates the effect of

The electronic configuration of Mg2+ is

The minimum amount of energy required for a reaction to take place is

A 50.0mg supply of iodine -131, used in hospital in the treatment of hyperthyroidism was stored for 32.4 days. If the half-life of iodine - 131 is 8.1 days, how many milligrams remain?

Radioactive changes differ from ordinary chemical changes in that radioactive changes

The addition of water to calcium oxide leads to

A colourless solution was tested with Tollen's reagent, the colourless solution gave a silver mirror. This indicates the presence of

The metal used to recover copper from a solution of copper sulphate is

The Metallurgical process in which a metal is obtained in a fused state is called

Which of the following statements is correct? Aqueous solution of oxides of group 1 elements Li, Na, K etc. are:

Which of the following is not true about electrovalent compounds.

The reaction of an alkene with hydrogen in the presence of a catalyst is

The substance least considered as a source of environmental pollution is

In the reaction CaC_2(s) + 2H₂O ⟶ Ca(OH)_2(s) + C₂H_2(g), what is the mass of solid calcium needed to produce 1000cm³ acetylene gas at S.T.P?
[ C=2, Ca= 40, G.M.N =22400cm³]

If "d" represents the density of a gas and "k" is a constant, the rate of gaseous diffusion "r" is directly related to d by the equation: