Start learning →

DSSSB TGT Hydrogen — practice questions

Explore 7 free Hydrogen questions in DSSSB TGT Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

Practise Hydrogen with Quill →

Hydrogen questions and exercises with answers

Showing questions 1–7 of 7.

Mendeleev arranged elements primarily in order of:Read the answer and worked solution →Sodium (atomic number 11) belongs to which group and period?Read the answer and worked solution →Which trend is followed by ionisation energy across a period?Read the answer and worked solution →Which of the following elements would lose an electron easily?Read the answer and worked solution →What type of oxide would Eka-aluminium form?Read the answer and worked solution →Three elements B, Si and Ge areRead the answer and worked solution →Which of the following elements will form an acidic oxide?Read the answer and worked solution →

Worked practice questions

Mendeleev arranged elements primarily in order of:

  1. Atomic mass
  2. Atomic number
  3. Atomic radius
  4. Density
Show answer and solution

Correct answer: A. Atomic mass

1. Mendeleev's periodic table predates the modern one. 2. He used the increasing atomic masses of the elements he knew. 3. He left gaps for undiscovered elements (eka-aluminium, eka-silicon, etc.). 4. Atomic number became the basis only after Moseley. 5. So the original Mendeleev arrangement used atomic mass. _Source: syllabus Science Ch 5 'Periodic Classification of Elements'_

Open this question →

Sodium (atomic number 11) belongs to which group and period?

  1. Group 11, period 4
  2. Group 2, period 3
  3. Group 1, period 2
  4. Group 1, period 3
Show answer and solution

Correct answer: D. Group 1, period 3

1. Sodium has electronic configuration 2, 8, 1. 2. Three electron shells place it in period 3. 3. One valence electron places it in Group 1. 4. So sodium is in Group 1, period 3. 5. Sodium is the second alkali metal after lithium. _Source: syllabus Science Ch 5 'Periodic Classification of Elements'_

Open this question →

Which trend is followed by ionisation energy across a period?

  1. Continuously increases
  2. Generally increases with some dips
  3. Continuously decreases
  4. Has no clear pattern in the standard view
Show answer and solution

Correct answer: B. Generally increases with some dips

1. Ionisation energy rises with nuclear charge across a period. 2. There are exceptions where the configuration is especially stable. 3. Group 13 dips below Group 2; Group 16 dips below Group 15. 4. So the trend is rising overall with small dips at known positions. 5. Hence the general statement 'increases with some dips' is correct. _Source: syllabus Science Ch 5 'Periodic Classification of Elements'_

Open this question →

How to practise

  1. Choose a Hydrogen question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Chemistry topics

Alcohols Phenols EthersAlkenesChemical EquilibriumClassification of Elements and PeriodicityOrganic Chemistryp-Block Elementsp-Block Elements (Groups 15-18)Polymers