Marble is a changed form of which of the following?
Marble is a changed form of which of the following?
Which of these is not a primary color?
Which of these is not a primary color?
How many days are in a leap year?
How many days are in a leap year?
The Lunar Eclipse occurs when?
The Lunar Eclipse occurs when?
Who invented the doctor's thermometer?
Who invented the doctor's thermometer?
Who developed the small pox vaccination?
Who developed the small pox vaccination?
Which of the following was the world's worst industrial disaster?
Which of the following was the world's worst industrial disaster?
Which one of the following is an air-pollutant present in the atmosphere?
Which one of the following is an air-pollutant present in the atmosphere?
বস্তুর ওজন সবচেয়ে বেশি—
বস্তুর ওজন সবচেয়ে বেশি—
One liter of water is equivalent to how many kilograms?
One liter of water is equivalent to how many kilograms?
What are the main constituents of biogas?
What are the main constituents of biogas?
Choose the correct combination—
Choose the correct combination—
What are elements containing the same number of protons but different number of neutrons called?
What are elements containing the same number of protons but different number of neutrons called?
Who among the the following is associated with the invention of computers?
Who among the the following is associated with the invention of computers?
Which of the following soils is very hard to cultivate?
Which of the following soils is very hard to cultivate?
Who was the surgeon who pioneered antiseptic surgery in 1865?
Who was the surgeon who pioneered antiseptic surgery in 1865?
The center of the earth is known as the—
The center of the earth is known as the—
The first attempt in printing was made in England by—
The first attempt in printing was made in England by—
What do scientists beleve global warming is caused by?
What do scientists beleve global warming is caused by?
What is the correct increasing order of abundance of the main components of air?
What is the correct increasing order of abundance of the main components of air?
How many legs do butterflies have?
How many legs do butterflies have?
Which one of the following is used for bleaching purposes?
Which one of the following is used for bleaching purposes?
Meteorology is the science of—
Meteorology is the science of—
Which one is a renewable energy source?
Which one is a renewable energy source?
Eskimos hunt using a dog-driven vehicle called:
Eskimos hunt using a dog-driven vehicle called:
The Lunar Eclipse occurs when?
The Lunar Eclipse occurs when?
Who invented the miner's safety-lamp?
Who invented the miner's safety-lamp?
The freezing point in farenheit thermometer is:
The freezing point in farenheit thermometer is:
Starch is a mixture of—
Starch is a mixture of—
Mark the wrong combination—
Mark the wrong combination—
Which among the following is a natural polymer?
Which among the following is a natural polymer?
The tendency of a liquid drop to assume spherical shape is due to—
The tendency of a liquid drop to assume spherical shape is due to—
Which of the followings is not a part of milk?
Which of the followings is not a part of milk?
Which of the following is not a part of the human eye?
Which of the following is not a part of the human eye?
What is the normal temperature of human body?
What is the normal temperature of human body?
The shortest day is in the month of—
The shortest day is in the month of—
Nitrogen constitutes nearly- % of the atmosphere.
Nitrogen constitutes nearly- % of the atmosphere.
Which of the following is the main source of energy of the sun?
Which of the following is the main source of energy of the sun?
The velocity of light was measured by—
The velocity of light was measured by—
Which of these is not a planet in the Solar System?
Which of these is not a planet in the Solar System?
Study of earthquakes is known as—
Study of earthquakes is known as—
What is the name of earth's moon?
What is the name of earth's moon?
The telephone was invented by-
The telephone was invented by-
What is the name given to the respiratory holes on the surface of a leaf?
What is the name given to the respiratory holes on the surface of a leaf?
Which of the following is a renewable source of energy?
Which of the following is a renewable source of energy?
A universal doner is a person having blood group of—
A universal doner is a person having blood group of—
Fish preathe through—
Fish preathe through—
What is the scientific name of Vitamin C?
What is the scientific name of Vitamin C?
Light year is related to—
Light year is related to—
Removal of the top layer of soil/rocks by wind, water is known as-
Removal of the top layer of soil/rocks by wind, water is known as-
SMS available in mobile phone stands for—
SMS available in mobile phone stands for—
The credit of developing the polio vaccine goes to—
The credit of developing the polio vaccine goes to—
"To every action there is an equal and oposite reaction"-- this theory has been given by--
"To every action there is an equal and oposite reaction"-- this theory has been given by--
The universal blood group donor is—
The universal blood group donor is—
Joule is the unit of—
Joule is the unit of—
Which of the following is the working principle of a washing machine?
Which of the following is the working principle of a washing machine?
The scientist who first discovered that the earth revolves round the sun was-
The scientist who first discovered that the earth revolves round the sun was-
The hardness of the bone tissue is due to the phosphates and carbonates of which of the following pairs of elements?
The hardness of the bone tissue is due to the phosphates and carbonates of which of the following pairs of elements?
Who among following invented the steam engine?
Who among following invented the steam engine?
The household line voltage(in volt) is approximately—
The household line voltage(in volt) is approximately—
The Chernobyl nuclear accident took place in—
The Chernobyl nuclear accident took place in—
Which of the following is a device for storing electric charge?
Which of the following is a device for storing electric charge?
What is the acceptable safe limit of Arsenic per liter of water?
What is the acceptable safe limit of Arsenic per liter of water?
Which of the following sulphur compound is used as a bleaching agent in textile industry?
Which of the following sulphur compound is used as a bleaching agent in textile industry?
Diamond and graphite are similar in-
Diamond and graphite are similar in-
The name of the strand of virus, known as 'swine flu' virus, that has been declares as a pandemic worldwide is:
The name of the strand of virus, known as 'swine flu' virus, that has been declares as a pandemic worldwide is:
What does Angstrom measure?
What does Angstrom measure?
Which one of the following crops requires continuous semi-aquatic condition for cultivation?
Which one of the following crops requires continuous semi-aquatic condition for cultivation?
On which principle does the tape recorder function?
On which principle does the tape recorder function?
In Y2K, K stands for—
In Y2K, K stands for—
Which of the following is necessary for a substance to burn?
Which of the following is necessary for a substance to burn?
Which one of the following is not a noble gas?
Which one of the following is not a noble gas?
Which Vitamin do we get from sun ray?
Which Vitamin do we get from sun ray?
Which one of the following is used for bleaching purposes?
Which one of the following is used for bleaching purposes?
Anopheles mosquito causes which of the following deases?
Anopheles mosquito causes which of the following deases?
Which of the following pairs is incorrect?
Which of the following pairs is incorrect?
Main cause of night blindness is deficiency of Vitamin-
Main cause of night blindness is deficiency of Vitamin-
Ecology deals with-
Ecology deals with-
Which organization of UNO declared prohibition on Clone human chiled?
Which organization of UNO declared prohibition on Clone human chiled?
Which one of the following has the shortest wave length?
Which one of the following has the shortest wave length?
Which of the following is not a gas?
Which of the following is not a gas?
While functioning what is the temperature level inside a refrigerator?
While functioning what is the temperature level inside a refrigerator?
Every atom of Carbon di-oxide contains -- Oxygen and --- Carbon.
Every atom of Carbon di-oxide contains -- Oxygen and --- Carbon.
Decible is unit of-
Decible is unit of-
How many Dynes are there in one gram weight?
How many Dynes are there in one gram weight?
The credit of inventing the television goes to-
The credit of inventing the television goes to-
HIV AIDS can be spread through—
HIV AIDS can be spread through—
Nameplates made of brass get discolured in air because of the presence of which of the following gases in the air?
Nameplates made of brass get discolured in air because of the presence of which of the following gases in the air?
ডুবোজাহাজে কোন যন্ত্রের সাহায্যে পানির নিচ থেকে উপরের দৃশ্য দেখা যায়?
ডুবোজাহাজে কোন যন্ত্রের সাহায্যে পানির নিচ থেকে উপরের দৃশ্য দেখা যায়?
Which of the following is not a metal?
Which of the following is not a metal?
Numismatics is the study of—
Numismatics is the study of—
Which of the following statements is true?
Which of the following statements is true?
The name of the device used in measuring earthquake is-
The name of the device used in measuring earthquake is-
The Richter scale is used for measuring-
The Richter scale is used for measuring-
Centigrade & Farenheit scales give same reading at-
Centigrade & Farenheit scales give same reading at-
The unit of current is—
The unit of current is—
Wright Brothers are regarded inventors of the-
Wright Brothers are regarded inventors of the-
Which one of the following gases is not a greenhouse gas?
Which one of the following gases is not a greenhouse gas?
Which one of the following gases is predominant in the atmosphere?
Which one of the following gases is predominant in the atmosphere?
Robert Koch worked on—
Robert Koch worked on—