WorksheetsScience quiz
Total questions: 50
Worksheet time: 25mins
Following gas is called as greenhouse gas
CFC
Carbondioxide
Sulferdioxide
Nitrogen dioxide
Oxygen
Example for nonmetal which is good conductor of heat and electricity
Sulfer
Carbon
Graphite
Nitrogen
Hydrogen
Genotypic ratio of Mendel monohybrid cross is
1:2
3:1
1:2:1
1:1:2
Magnesium ribbon is rubbed before burning because it has coating of
Magnesium carbonate
Magnesium oxide
Magnesium sulphate
Magnesium chloride
Oxidation is process which involves addition of
Oxygen
Nitrogen
Carbon
Hydrogen
The gas which is filled in plux bag containg food made from oil or fat
Oxygen
Chlorine
Nitrogen
Hydrogen
Products formed when iron reacts with dilute hydrochloric acid are
Iron chloride and hydrogen
Iron chloride and water
Iron oxide and hydrogen
Iron oxide and water
Which one of the following salt does not contain water of crystalization
Copper sulphate solution
Baking soda
Washing soda
Gypsum
The acid present in lemon is
Acetic acid
Citric acid
Tartaric acid
Oxalic acid
Brine is an
Aqueous solution of sodium hydroxide
Aqueous solution of sodium carbonate
Aqueous solution of sodium chloride
Aqueous solution of sodium bicarbonate
Na2CO3 10H2O is
Baking soda
Washing soda
Bleaching powder
Plaster of paris
Sodium carbonate is a basic salt because it is salt of
Strong acid and strong base
Weak acid and weak base
Strong acid and weak base
Weak acid and strong base
Lime water reacts with chlorine to give
Bleaching powder
Baking powder
Plaster of paris
Washing powder
Leaves of neetle sting is a natural source of
Formic acid
Citric acid
Lactic acid
Ethanoic acid
Which property of metals used for making bells and strings of musical instruments
Sonorus
Malleability
Ductility
Conductivity
Reaction of iron with copper sulphate solution is the example of
Combination reaction
Decomposition reaction
Displacement reaction
Neutralization reaction
Non metal form covalent bond with chloride because
They give electron to chlorine
They share electron with chlorine
They forms ions with chlorine
They cannot share electron with chlorine
The highly reactive metalslike sodium and potassium are extracted by
Electrolysis of their Molton chloride
Electrolysis of their Molton oxode
Reduction by carbon
Reduction by alluminium
Which of the following nonmetal is lustrous
Sulfer
Oxygen
Nitrogen
Iodin
Example of an amphoteric oxide is
Na2O
K2O
Al2O3
MgO
The process in which one is heated in absence of oxygen is called
Roasting
Reduction
Calcination
Smelting
Galvanisation is a method of protecting iron from rusting by coating with thin layer of
Galium
Aluminum
Zinc
Silver
Copper object loose their shine and form green coating is
Copper oxide
Copper hydroxide
Copper carbonate
Coppersulphide
Arrangement of elements in modern periodic table is based on their
Increasing atomic massing period
Increasing atomic mass in groups
Increasing atomic number along period
Increasing atomic number down group
Number of group and periods in modern periodic table are
7 and 18
4 and 18
18 and 7
14 and 7
Number of isomers of pentane are
2
3
4
6
Which of following under goes addition reaction
Methane
Propane
Ethane
Ethene
On oxidation of ethanol in presence of KMnO4 gives
Acetic acid
Water
Ethanal
Acetone
Functional group prest in butanoic acid id
OH
CHO
COOH
Cl
To convert banzene in to cyclohexane number of hydrogen are required are
5
6
4
3
First member of alkyne homologous series is
Propyne
Ethyne
Methane
Ethene
The mode of nutrition found in fungi is
Parasitic nutrition
Holozoic nutrition
Autotrophic nutrition
Saprotrophic nutrition
Roots of plants absorb water from soil by the process of
Diffusion
Transpiration
Osmosis
Translocation
The site of photosynthesis in cells of leaf is
Mitochondria
Chloroplast
Cytoplasm
Protoplasm
In amoeba food is digested in
Mitochondria
Pseudopodia
Food vacuole
Chloroplast
Which region of alimentary canal absobs digested food
Stomach
Small intestine
Large intestine
Liver
The contraction and expansion movement of walls of food pipe is called
Translocation
Respiration
Peristaltic movement
Digestion
When a few drops of iodin solution is added to rice solution turns black-blue in colour this indicates presence of
Fat
Protein
Starch
Glucose
Products of anaerobic respiration are
Lactic acid +energy
CO2 +water +energy
Ethanol +CO2 +energy
Pyruvate
Respiratory pigment in human being is
Carotene
Chlorophyll
Haemoglobin
Mitochondria
Which plant tissue transport water and mineral from roots to leat
Xylum
Phloem
Parenchyma
Collenchyma
Circulatory fluid in human being other than blood is
Platelets
RBC
Lymph
Food
During favorable condition amoeba reproduce by
Multiple fission
Binary fission
Budding
Fragmentation
Bryophyllum can be prapogated vegetatively by
Stem
Leaf
Root
Flower
Flower of the hibiscus plant is
Bisexual
Unisexual
Neuter
Non of above
The process of release of eggs from ovary is called as
Menstruation
Reproduction
Insemination
Ovulation
The embryo in human gets nutrition from mother blood with help of special tissue
Villi
Uterus
Placenta
Womb
Number of pairs of sex chromosomes in human being is
2
3
1
4
Organs which have same basic structure but different function are called
Vestigial organ
Analogous orgon
Homologous orgon
Non of above
The process by which new species develop from existing species is called as
Evolution
Natural selection
Artificial selection
Speciation
