1 |
Non-stick cooking utensils are coated with: |
Black paint
Teflon
P.V.C
Polystyrene
|
2 |
Water has maximum density at: |
-1<span style="line-height: 1.5;">°C</span>
0<span style="line-height: 1.5;">°C</span>
4<span style="line-height: 1.5;">°C</span>
100<span style="line-height: 1.5;">°C</span>
|
3 |
Which metal is used in storage batteries? |
Iron
Lead
Copper
Tin
|
4 |
Sodium metal is kept under: |
Alcohol
Water
Petrol
Kerosene
|
5 |
Most soluble in water is: |
Sugar
Camphore
Sulphur
Common salt
|
6 |
Which of the following is an element? |
Ruby
Diamond
Sapphire
Emerald
|
7 |
Which of the following is not an ore of aluminium? |
Azurite
Bauxite
Feldspar
Cryolite
|
8 |
which of the following metals form an amalgam with other metals? |
Lead
Tin
Zinc
Mercury
|
9 |
Stainless steel is an alloy of: |
Iron,carbon and nickel
Iron,chromium and nickel
Iron and manganese
Iron and zinc
|
10 |
Which form of phosphorus is used in safety matches? |
White phosphorous
Red phosphorous
Black phosphorous
Yellow phosphorous
|
11 |
Which of the following is used as a material for making protective windows in space probes? |
Diamond
Steel
Carbon
Graphite
|
12 |
What is a laughing gas? |
Nitrous oxide
Sulphur dioxide
Carbon dioxide
Carbon mono-oxide
|
13 |
From which mineral is radium obtained? |
Limestone
Pitchblende
Rutile
Haematite
|
14 |
Which of the following is a non-metal that remains liquid at room temperature? |
Helium
Limestone
Bromine
Phosphorus
|
15 |
Which of the following is a non-ferrous metal? |
Aluminium
Iron
Nickle
Cobalt
|
16 |
Which of the following is used in beauty parlours for hair setting? |
Chlorine
Sulphur
Silicon
Phosphorus
|
17 |
The most malleable metal is: |
Silver
Gold
Aluminium
Sodium
|
18 |
Bio gas contains mainly: |
Butane
Methane
Carbon dioxide
Sodium
|
19 |
The elements common to all acids is: |
Carbon
Oxygen
Sulphur
Hydrogen
|
20 |
In which of the following activities silicon carbide is used? |
Cutting very hard substance
Making cement and glass
Disinfecting water of ponds
Making casts for statues
|
21 |
The gas used to extinguish fire is: |
Neon
Nitrogen
Carbon dioxide
Oxygen
|
22 |
Chlorofluorocarbons (CFC) gas is used in which of the following products? |
Television
Tube light
Refrigirator
None of these
|
23 |
The most abundant metal in the earth's crust is: |
Zinc
Copper
Silicon
Iron
|
24 |
Balloons are filled with: |
Oxygen
Helium
Nitrogen
Argon
|
25 |
Which of the following is a best conductor of electricity? |
Ordinary water
Sea water
Boiled water
Rain water
|
26 |
Air is a: |
Mixture
Element
Compound
Electrolyte
|
27 |
Diamond is an allotropic form of: |
Silicon
Carbon
Sulphure
Germanium
|
28 |
An alloy used in making heating elements for electric heating devices is: |
Solder
Nichrome
Alloy steel
German silver
|
29 |
The element present in the largest amount in rocks and minerals is: |
Silicon
Carbon
Hydrogen
Aluminium
|
30 |
The most important ore of aluminium is: |
Calcite
Bauxite
Calamine
Galena
|
31 |
Which of the following is a lightest metal? |
Mercury
Silver
Lithium
Lead
|
32 |
Cotton fibber is rooted from: |
Seed
Stem
Root
Leaf
|
33 |
The science of vegetable culture is known as: |
Arboriculture
Horticulture
Apiculture
Agriculture
|
34 |
Herbicides are used for the elimination of: |
Insects
Weed
Pests
Ringing
|
35 |
Citrus fruit products should not be preserved in vessels of: |
Tin
Copper
Steel
Iron
|
36 |
Stem cutting are commonly used for regrowing: |
Cotton
Banana
Sugarcane
Mango
|
37 |
Which of the following is a mixture fertilizer? |
Urea
NPK
CAM
Sulphate
|
38 |
What is mixture farming? |
cultivating different crops in the same farm
cultivating crops and keeping livestock in the same form
Cultivating different varieties of same crop
None of these
|
39 |
Seeds can best be preserved in: |
Hot and dry condition
Cool and dry condition
Hot and wet condition
Cool and wet condition
|
40 |
Which of the following is not a cercal? |
Rice
Barley
Mustard
Maize
|
41 |
Which of the following chemicals is used to preserving fruit juice? |
Sodium benzoate
Ammonium sulphate
Sodium hydroxide
None of these
|
42 |
The human body is immune to which disease? |
Jaundice
Diabetes
Small pox
Tuberculoses
|
43 |
Which vaccine was first discovered? |
BCG
Small pox
Cholera
DPT
|
44 |
Ready source of energy available for athletes is: |
Carbohydrate
fats
Protein
Vitamin
|
45 |
Which disease is not caused by insect bite? |
Plague
Arthritis
Typhus
Malaria
|